BLACKHILL CAPITAL INC

$1.9B reported 13(f) long value · latest quarter 2026-03-31 · CIK 872162 · EDGAR ↗
sum of disclosed values for 2026-03-31; 0 positions carry a NULL value and are excluded from the sum, surfaced here rather than folded away
$1.9B
ALL retained default holdings for this (filer, period), including NULL-value ones
49
positions with no comparable holding in the prior quarter (kind new), 2026-03-31
0
positions absent from this quarter's filing after being held last quarter (kind exit), 2026-03-31 — inferred from absence, not a sale record
1
A quarter-end snapshot. Filed up to 45 days later, so this page is not current holdings and never a complete portfolio. what a 13F is — and is not ↓ methodology §13F ↗
FILING WINDOW OPEN
Quarter 2026-09-30: the 13F window is open until 2026-11-16. Rankings and QoQ moves that touch this quarter are provisional by construction — filers who have not yet reported are not zeros.

Position changes — into 2026-03-31

by shares · Δ value · filing link · how changes are classified §
Period
Position changes into quarter 2026-03-31
position matched across quarters by exact reported CUSIP over a registry gap — producer-reconciled identity, never a name match identity_reconciled_by_cusipthe reported share count is unchanged across the pair; this build's data classified the change from its reported value; builds from 2026-09-10 on read it as NO CHANGE classified_by_value · EXIT = absent this quarter: disposed, delisted, under confidential treatment, or reported instead by an affiliated manager — the filing does not say which · change not classifiable: value undisclosed on one side of the quarter pair, or neither shares nor value can classify it · NO CHANGE = the share count is identical in both quarters; the value moved only with price, so the row is mark-to-market and never an ADD or a TRIM (NEW / ADD / TRIM / EXIT / NO CHANGE) · NO PRIOR = this filer has no comparable holdings list for the previous quarter on record — a first filing under this registration, or a quarter reported inside an affiliated manager's filing — so the position is not called a new stakederived by Public Filings from the published aggregate; NULL means the source did not disclose a usable value — never zeroreported unit changed across the pair (SH↔PRN); the share delta is withheld rather than fabricated shares_unit_mismatchPrev valueCurr valuePrev sharesCurr shares
position key pos:11774 · issuer key iss:1974 COMTRIM+$27.9M−4,512$1.4B$1.4B7,689,0367,684,524
position key pos:15863 · issuer key iss:1123 COMTRIM−$22.8M−243$157M$134M145,964145,721
position key pos:13215 · issuer key iss:144 COMTRIM−$4.8M−1,300$67.8M$63.0M249,500248,200
position key pos:15499 · issuer key iss:23 COMADD+$762K+16,000$56.5M$57.2M247,110263,110
position key pos:13432 · issuer key iss:411 COMTRIM+$7.8M−500$34.4M$42.2M60,00059,500
position key pos:13390 · issuer key iss:656 COMADD+$4.0M+40,000$19.1M$23.2M1,160,0001,200,000
position key pos:15008 · issuer key iss:318 COMTRIM+$1.6M−5,200$15.1M$16.7M280,564275,364
position key pos:16953 · issuer key iss:1527 COMADD+$311K+15,529$197K$508K9,09324,622
pos:16564EXIT‡e−$340K−8,540$340K$08,540—

Flags: no row carries a flag.

Mark-to-market only (no share change) · 41

Positions whose share count is identical in both quarters; the value changed with price, not with a decision.

Positions held with no share change into quarter 2026-03-31
position matched across quarters by exact reported CUSIP over a registry gap — producer-reconciled identity, never a name match identity_reconciled_by_cusipthe reported share count is unchanged across the pair; this build's data classified the change from its reported value; builds from 2026-09-10 on read it as NO CHANGE classified_by_value · EXIT = absent this quarter: disposed, delisted, under confidential treatment, or reported instead by an affiliated manager — the filing does not say which · change not classifiable: value undisclosed on one side of the quarter pair, or neither shares nor value can classify it · NO CHANGE = the share count is identical in both quarters; the value moved only with price, so the row is mark-to-market and never an ADD or a TRIM (NEW / ADD / TRIM / EXIT / NO CHANGE) · NO PRIOR = this filer has no comparable holdings list for the previous quarter on record — a first filing under this registration, or a quarter reported inside an affiliated manager's filing — so the position is not called a new stakederived by Public Filings from the published aggregate; NULL means the source did not disclose a usable value — never zeroreported unit changed across the pair (SH↔PRN); the share delta is withheld rather than fabricated shares_unit_mismatchPrev valueCurr valuePrev sharesCurr shares
position key pos:12366 · issuer key iss:22 COMNO CHANGE−$6.1M0$33.6M$27.6M268,530268,530
position key pos:11825 · issuer key iss:1225 COMNO CHANGE−$7.5M0$31.9M$24.4M66,05066,050
position key pos:15642 · issuer key iss:1334 COMNO CHANGE−$1.7M0$26.1M$24.4M139,950139,950
position key pos:17751 · issuer key iss:1214 COMNO CHANGE+$2.5M0$17.8M$20.3M168,857168,857
position key pos:13599 · issuer key iss:1035 COMNO CHANGE+$2.4M0$13.3M$15.7M64,18764,187
position key pos:11897 · issuer key iss:2010 COMNO CHANGE−$730K0$12.1M$11.3M95,89995,899
position key pos:11205 · issuer key iss:255 COMNO CHANGE−$498K0$10.7M$10.2M21,23721,237
position key pos:14206 · issuer key iss:1193 COMNO CHANGE−$1.4M0$11.4M$10.0M20,00020,000
position key pos:17095 · issuer key iss:588 COMNO CHANGE−$1.8M0$11.5M$9.8M101,500101,500
position key pos:14175 · issuer key iss:95 COMNO CHANGE−$825K0$8.4M$7.6M36,58036,580
position key pos:14992 · issuer key iss:1485 COMNO CHANGE+$50.7K0$6.4M$6.5M44,87144,871
position key pos:17821 · issuer key iss:89 COMNO CHANGE−$476K0$5.5M$5.1M17,66017,660
position key pos:15142 · issuer key iss:89 COMNO CHANGE−$407K0$5.0M$4.6M15,98015,980
position key pos:11020 · issuer key iss:255 COMNO CHANGE−$220K0$4.5M$4.3M66
position key pos:13340 · issuer key iss:666 COMNO CHANGE+$623K0$3.5M$4.1M107,704107,704
position key pos:12417 · issuer key iss:2008 COMNO CHANGE+$21.0K0$3.8M$3.8M42,07942,079
position key pos:11588 · issuer key iss:1058 COMNO CHANGE−$128K0$2.9M$2.8M29,00029,000
position key pos:11717 · issuer key iss:440 COMNO CHANGE+$629K0$1.8M$2.4M11,55011,550
position key pos:10790 · issuer key iss:1444 COMNO CHANGE+$150K0$1.2M$1.3M47,17847,178
position key pos:12666 · issuer key iss:688 COMNO CHANGE+$49.7K0$999K$1.0M26,04126,041
position key pos:16096 · issuer key iss:1206 COMNO CHANGE+$15.5K0$917K$932K3,0003,000
position key pos:11765 · issuer key iss:110 COMNO CHANGE+$33.9K0$783K$817K10,80010,800
position key pos:12693 · issuer key iss:114 COMNO CHANGE+$33.5K0$783K$817K6,0006,000
position key pos:16392 · issuer key iss:1549 COMNO CHANGE−$55.7K0$819K$763K3,4003,400
position key pos:15198 · issuer key iss:1445 COMNO CHANGE+$20.7K0$674K$694K4,2004,200
position key pos:14929 · issuer key iss:1967 COMNO CHANGE+$19.4K0$622K$641K26,24026,240
position key pos:14952 · issuer key iss:731 COMNO CHANGE+$54.5K0$408K$463K1,6001,600
position key pos:15395 · issuer key iss:638 COMNO CHANGE+$24.6K0$428K$452K18,89118,891
position key pos:10434 · issuer key iss:482 COMNO CHANGE+$31.1K0$395K$426K5,0005,000
position key sid:sec:prov:c981d89112e9e1f2e94c030091f2b821 · issuer key cusip6:596680 COMNO CHANGE+$10.9K0$336K$347K6,6666,666
position key pos:13000 · issuer key iss:377 COMNO CHANGE+$15.3K0$329K$345K7,6007,600
position key pos:11570 · issuer key iss:1599 COMNO CHANGE−$15.1K0$326K$311K478478
position key pos:17758 · issuer key iss:1605 COMNO CHANGE+$4.7K0$212K$216K351351
position key pos:15485 · issuer key iss:903 COMNO CHANGE+$15.5K0$109K$125K600600
position key pos:10357 · issuer key iss:1786 COMNO CHANGE−$15.6K0$89.9K$74.4K200200
position key pos:11225 · issuer key iss:1173 COMNO CHANGE−$26.1K0$97.2K$71.2K5,9915,991
position key pos:15433 · issuer key iss:1290 COMNO CHANGE+$1.6K0$60.9K$62.5K650650
position key pos:12525 · issuer key iss:1319 COMNO CHANGE−$3440$57.7K$57.4K200200
position key sid:sec:prov:162aed932748a7744c26fc1170a37120 · issuer key cusip6:890516 COMNO CHANGE+$7.8K0$46.9K$54.6K1,2791,279
position key pos:10741 · issuer key iss:199 COMNO CHANGE+$6.6K0$26.7K$33.3K2,3752,375
position key pos:11354 · issuer key iss:506 COMNO CHANGE+$3.5K0$25.1K$28.6K253253

Flags: no row carries a flag.

Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.
Truncated by Public Filings. Changes compare every position with a security identifier, new and exited included; holdings without one are counted, not compared. methodology §13F ↗

Reported positions — 2026-03-31

1–47 of 47 issuers · $1.9B disclosed value over 49 rows · 0 undisclosed-value rows
View
This build carries one quarter for this manager: 2026-03-31. Notable managers carry four published quarters, others two.
Positions BLACKHILL CAPITAL INC reported for the quarter ended 2026-03-31, as that filer reported them
This list carries reported issuer names and security identities, without a dated ticker mapping. Symbols are not inferred from names.a position composed from a base filing plus NEW-HOLDINGS amendments keeps every source row here; the composition's latest filed date is the one shown served from this build's published holdings (derived from the filer's own reported rows); every row resolves to its filingShare of total reported value, calculated only when the full position list has disclosed values. This is 13F long value, not total assets.value undisclosed on the filing: retained and counted, excluded from sums, never shown as $0SharesWt
—WILLIAMS SONOMA INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$1.4B7,684,52472.1%
—LILLY ELI & CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$134M145,7216.9%
—APPLE INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$63.0M248,2003.2%
—ABBVIE INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$57.2M263,1102.9%
—CATERPILLAR INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$42.2M59,5002.2%
—ABBOTT LABS COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$27.6M268,5301.4%
verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)MICROSOFT CORP COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
$24.4M66,0501.3%
verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)NVIDIA CORP COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
$24.4M139,9501.3%
—ENERGY TRANSFER L P COM UNIT L · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$23.2M1,200,0001.2%
—MERCK & CO INC NEW COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$20.3M168,8571.0%
—BRISTOL MYERS SQUIBB CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$16.7M275,3640.9%
—JOHNSON & JOHNSON COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$15.7M64,1870.8%
—BERKSHIRE HATHAWAY INC DEL CL
2 positions · 2 reported rows
Rows BLACKHILL CAPITAL INC reported for BERKSHIRE HATHAWAY INC DEL CL, as it reported them
BERKSHIRE HATHAWAY INC DEL CL · COM CUSIP — $10.2M21,237
BERKSHIRE HATHAWAY INC DEL CL · COM CUSIP — $4.3M6
ticker not yet mapped
$14.5M21,2430.7%
—ZOETIS INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$11.3M95,8990.6%
—MASTERCARD INC CL A · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$10.0M20,0000.5%
—DISNEY WALT CO DISNEY COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$9.8M101,5000.5%
verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred) verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)ALPHABET INC CAP STK CL C
2 positions · 2 reported rows
Rows BLACKHILL CAPITAL INC reported for ALPHABET INC CAP STK CL C, as it reported them
ALPHABET INC CAP STK CL C · COM CUSIP — $5.1M17,660
ALPHABET INC CL A · COM CUSIP — $4.6M15,980
$9.7M33,6400.5%
verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)AMAZON COM INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
$7.6M36,5800.4%
—PROCTER & GAMBLE CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$6.5M44,8710.3%
—ENTERPRISE PRODS PARTNERS L P · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$4.1M107,7040.2%
—ZIMMER BIOMET HLDGS INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$3.8M42,0790.2%
—KIMBERLY-CLARK CORP COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$2.8M29,0000.1%
—CHEVRON CORP NEW COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$2.4M11,5500.1%
—PFIZER INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$1.3M47,1780.1%
—ESSENTIAL UTILS INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$1.0M26,0410.1%
—MCDONALDS CORP COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$932K3,0000.0%
—AMERICAN STS WTR CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$817K10,8000.0%
verified against the SEC company list on 2026-09-10 — a reviewed mapping row for this filed issuer name and class (never inferred)AMERICAN WTR WKS CO INC NEW CO · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
$817K6,0000.0%
—RESMED INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$763K3,4000.0%
—PHILIP MORRIS INTL INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$694K4,2000.0%
—WEYERHAEUSER CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$641K26,2400.0%
—RAYONIER INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$508K24,6220.0%
—F5 INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$463K1,6000.0%
—ELANCO ANIMAL HEALTH INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$452K18,8910.0%
—COLGATE PALMOLIVE CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$426K5,0000.0%
—MIDDLESEX WTR CO COM · COM CUSIP 596680108
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$347K6,6660.0%
—CALIFORNIA WTR SVC GROUP COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$345K7,6000.0%
—STATE STR SPDR S&P 500 ETF TR · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$311K4780.0%
—SPDR S&P MIDCAP 400 ETF TR UNI · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$216K3510.0%
—HERSHEY CO COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$125K6000.0%
—TESLA INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$74.4K2000.0%
—MAGNITE INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$71.2K5,9910.0%
—NETFLIX INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$62.5K6500.0%
—NORFOLK SOUTHN CORP COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$57.4K2000.0%
—TOOTSIE ROLL INDS INC COM · COM CUSIP 890516107
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$54.6K1,2790.0%
—AVANOS MED INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$33.3K2,3750.0%
—CONSOLIDATED EDISON INC COM · COM CUSIP —
quarter ended 2026-03-31 filed filed 2026-05-14 +44d
ticker not yet mapped
$28.6K2530.0%

1–20 of 47 issuers

Change kind and share change are in Position changes above; Congress overlap is planned.

1–47 of 47 issuers · page 1 of 1
One line per issuer, largest first; a row with no issuer key stands on its own line. Open a line for its rows as this filer reported them. The list holds every row this filer reported for the quarter. Issuer totals on the holders pages count each manager's own report once; that never removes a row here. how positions are grouped ↗

Book shape

2026-03-31 · concentration · vs tracked median · tick = median
Top-25 concentration
99.5%above median 80.0%
Concentration index
5,283 bpsabove median 446 bps
Positions with value
49 / 49median book 97.5 positions

Concentration uses reported 13F long value, not total assets. The index is withheld when any position lacks a value. Medians are over the 8,748 tracked filers with a 2026-03-31 book; the index median over the 8,662 with a complete book.

holdings whose <value> did not parse — retained and counted, never zero-filled: 0 · share of the period's disclosed value held in the top-N positions; denominator is reported 13F value, not total assets: 99.5% · integer Herfindahl–Hirschman index in basis points over disclosed position values: 5,283 · QoQ moves: 50

Filing history

AVAILABLE QUARTERS
Available filing periods
PeriodSource
2026-03-31EDGAR ↗

PLANNED sector rotation · Congress overlap · signals for this filer

Complete source filings on SEC EDGAR

The complete filing on EDGAR.

The position list above is served from the published Public Filings build, each position as this filer reported it; where the page cannot embed every reported row, the list says how many it leaves out. This block is provenance, not a substitute: the filing itself is the record, and it is one click away. Public Filings decided on 2026-08-01 to serve this list from its published build; filings newer than this build are on EDGAR.

Open BLACKHILL CAPITAL INC's 13F filings on SEC EDGAR ↗
Notes on this data

Quarter-end holdings as filed

Explore the full published position list and its source filing. This record excludes the manager’s cash, shorts and non-13(f) assets.

Compare consecutive quarters

Position changes retain the producer’s classification and comparability flags. Share counts and reported values describe different changes.

A snapshot, not current holdings

Use the quarter selector to inspect available periods. Unknown values stay unknown and each table states its coverage.

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings. A position may have been changed or closed before you ever see it, and is older still by however long ago that quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars with unit_basis carried on every record.

Affiliated managers may report the same position (otherManager), so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice (ARCHITECTURE.md §5.2 / M2-CONTRACT §5).