Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

COSTCO WHOLESALE CORPORATION · common stock (filed as CMN) · Q1 2026 · 63 members disclosed COST ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 3,708 holders are listed, largest first
3,708
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$284B
holders whose share count rose or who opened the position (new + add), by shares
1,781
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
149
FILING WINDOW OPEN
Q3 2026 filings are due by 2026-11-16 — figures for that quarter will change; missing filers are not zeros.

Holders — quarter ended 2026-03-31

by reported value · Δ shares vs 2025-12-31Holders rank by reported value. The change kind — new, add, trim or exit — is read from the share count against the prior quarter, never from the reported value.
13F holders of COST ranked by reported value, 1–25 of 3,708 holders
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$34.8B34,947,040−152,481TRIM
2VANGUARD CAPITAL MANAGEMENT LLC$28.7B28,847,448—NO PRIOR
3STATE STREET CORP$18.1B18,152,232+5,073ADD
4VANGUARD PORTFOLIO MANAGEMENT LLC$10.7B10,705,635—NO PRIOR
5GEODE CAPITAL MANAGEMENT, LLC$10.6B10,659,224+270,705ADD
6MORGAN STANLEY$9.9B9,898,711+375,288ADD
7BANK OF AMERICA CORP /DE/$7.5B7,515,031+773,651ADD
8FMR LLC$6.7B6,718,589+25,445ADD
9NORTHERN TRUST CORP$4.9B4,928,107+14,386ADD
10Invesco Ltd.$4.3B4,313,506−15,223TRIM
11JPMORGAN CHASE & CO$4.0B4,039,916+4,039,916NEW
12ROYAL BANK OF CANADA$3.7B3,758,850−194,035TRIM
13CHARLES SCHWAB INVESTMENT MANAGEMENT INC$3.4B3,400,303+118,292ADD
14Bank of New York Mellon Corp$3.4B3,391,624−126,717TRIM
15Fisher Asset Management, LLC$3.2B3,219,856+43,570ADD
16GOLDMAN SACHS GROUP INC$3.2B3,213,809+3,213,809NEW
17WELLS FARGO & COMPANY/MN$3.1B3,111,874+67,864ADD
18Nuveen, LLC$3.1B3,074,057+901,338ADD
19UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$2.9B2,907,419+150,533ADD
20Amundi$2.8B2,839,016+283,360ADD
21Capital International Investors$2.7B2,749,541+2,109,174ADD
22VANGUARD FIDUCIARY TRUST CO$2.6B2,561,190—NO PRIOR
23Legal & General Group Plc$2.5B2,504,233+11,674ADD
24UBS Group AG$2.5B2,480,387−235,521TRIM
25ALLIANCEBERNSTEIN L.P.$2.4B2,766,241−82,191TRIM
Show the top 500 of 3,708 holders
Truncated by Public Filings. Top 500 of 3,708 holders shown; the rest are on EDGAR. Method ↗
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · COST

Congress · last 90 days

Buyers
0 — —
Sellers
3 Pete Sessions R–TX-17, Richard McCormick R–GA-7, Rick W. Allen R–GA-12 $352K–$780K

filed 2026-07-31 → 2026-10-29 · statutory ranges

Use of congressional disclosure reports for commercial purposes, credit decisions or solicitation is restricted by 5 U.S.C. §13107(c).

Notable managers · quarter ended 2026-03-31

Adding
1 Tudor Investment Corp $17.0M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · COSTCO WHOLESALE CORPORATION

Merged timeline of congressional filings and notable-manager moves on COST
DateWhoChangeSize
2026-10-27Pete Sessions CongressSELL$100K–$250K
2026-10-27Pete Sessions CongressSELL$250K–$500K
2026-10-14Rick W. Allen CongressSELL$1K–$15K
2026-08-14Richard McCormick CongressSELL$1K–$15K
2026-05-15Tudor Investment Corp 13FNEW+17,013 sh
2026-05-15Bridgewater Associates 13FTRIM−2,724 sh
2026-05-15Gotham Asset Management 13FTRIM−2,690 sh
2026-05-14Caxton Associates 13FTRIM−94 sh

8 newest, by filing date · 13F rows are quarter-end snapshots, not trades

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 changed or closed since the 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; each record notes its original unit.

Affiliated managers may report the same position, 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.