Stock ownership · SEC 13F · Q4 2025

COSTCO WHSL CORP NEW

Institutional ownership of COSTCO WHSL CORP NEW (CUSIP 22160K105) - who holds it, how concentrated it is, and what moved last quarter.

$438.0M
Reported value
27
Institutions
88%
Top-5 share

The verdict

COSTCO WHSL CORP NEW is a broadly held institutional position - 27 institutions report $438.0M in positions as of Q4 2025, with ownership heavily concentrated in a handful of holders.

27
institutions hold it
$438.0M
reported 13F value
88%
held by top 5
#19
of 216 by value

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

How to read this page

This page summarizes how large institutional investment managers report holding this security in their quarterly SEC Form 13F-HR filings. A 13F filing is a mandatory disclosure that any manager with at least $100 million in qualifying US-listed equity assets must submit to the Securities and Exchange Commission within 45 days of the end of each calendar quarter. The figures here therefore describe long equity positions as of a specific reporting quarter, not live market quotes, and not a manager's complete book. 13F disclosures deliberately exclude short positions, cash, most derivatives, non-US listings, and small holdings, so the institutional ownership shown is a floor rather than a full picture. "Holders" counts the distinct managers reporting a position; "reported value" sums the market value those managers disclosed; and "top-5 concentration" measures how much of that reported value sits with the five largest holders. Use these numbers to understand institutional interest and how it shifts quarter over quarter, never as a recommendation to buy or sell. Every figure is rendered directly from the underlying filings and can be verified against the original documents on SEC EDGAR. This page is provided for informational purposes only and is not financial advice, consult a licensed financial advisor before making investment decisions.

Reported value

$438.0M

Institutional 13F value

Institutions

27

Reporting holders

Top-5 concentration

88%

Held by 5 largest

New buyers

24

Opened Q4 2025

Broadly held Concentrated ownership

Top-5 holder concentration

0%100%88%
Top-5 holder concentration
Share of reported value held by the 5 largest institutions · Q4 2025
Ownership breadth 91.0%

COSTCO WHSL CORP NEW is more widely held than about 91% of the broadly-held stocks we track (by number of reporting institutions), as of Q4 2025.

Largest institutional holders of COSTCO WHSL CORP NEW
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Top 6 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a COSTCO WHSL CORP NEW position has risen from 21 to 27 over the last 8 quarters of 13F filings.

1020304050 Q1'24Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 27
Distinct 13F filers holding COSTCO WHSL CORP NEW, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Banque Transatlantique SA 209,562 $181.5M 41.4%
2 MARINER INVESTMENT GROUP LLC 125,000 $107.8M 24.6%
3 Pacer Advisors, Inc. 74,067 $63.9M 14.6%
4 Oak Grove Capital LLC 19,398 $16.7M 3.8%
5 Cross Staff Investments Inc 1,860 $16.0M 3.7%
6 GROUPAMA ASSET MANAGMENT 17,567 $15.1M 3.5%
7 MidFirst Bank 10,436 $9.0M 2.1%
8 Anchor Investment Management, LLC 8,475 $7.3M 1.7%
9 CHELSEA COUNSEL CO 8,310 $7.2M 1.6%
10 Tempo Wealth, LLC 4,580 $3.9M 0.9%
11 KW WEALTH MANAGEMENT LLC 2,224 $1.9M 0.4%
12 ARWA LLC 1,760 $1.5M 0.3%
13 Astoria Portfolio Advisors LLC. 1,522 $1.5M 0.3%
14 DGS Capital Management, LLC 836 $721K 0.2%
15 BDFS Capital LLC 789 $681K 0.2%
16 FLOYD FINANCIAL GROUP LLC 640 $631K 0.1%
17 Nolet Wealth Management, LLC 664 $573K 0.1%
18 Westshore Wealth, LLC 451 $389K 0.1%
19 Bell Investment Advisors, Inc 439 $379K 0.1%
20 Barnes Wealth Management Group, Inc 355 $306K 0.1%
21 Ketron Financial 291 $251K 0.1%
22 GFI Investment Counsel Ltd. 257 $222K 0.1%
23 Lynch Investment Planning, LLC 254 $219K 0.0%
24 INSTRUMENTAL WEALTH, LLC 218 $215K 0.0%
25 TD Capital Management LLC 7 $6K 0.0%
26 Strategic Investment Solutions, Inc. /IL 7 $6K 0.0%
27 SG Trading Solutions, LLC 2,941 $3K 0.0%

Latest Quarter Activity · Q4 2025

What the data says about COSTCO WHSL CORP NEW

A few large holders dominate this stock’s institutional float.

  • See how COSTCO WHSL CORP NEW's holder count and reported value have shifted quarter over quarter. Biggest movers
  • Check where this stock ranks among the most widely held names before treating one position as a signal. Most-held stocks
  • Review the gaps in 13F reporting before drawing conclusions from it. 13F limitations

Informational only, not investment advice. 13F is a 45-day-lagged snapshot of long US-equity positions; holdings may have changed.

Frequently Asked Questions

How many institutions hold COSTCO WHSL CORP NEW?
COSTCO WHSL CORP NEW is held by 27 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
What is the total institutional value of COSTCO WHSL CORP NEW?
Institutions report $438.0M of COSTCO WHSL CORP NEW as of Q4 2025.
How concentrated is ownership of COSTCO WHSL CORP NEW?
The top five institutional holders account for 88% of the reported institutional value in COSTCO WHSL CORP NEW, making ownership heavily concentrated in a handful of holders.
Who is the largest institutional holder of COSTCO WHSL CORP NEW?
Banque Transatlantique SA is the largest reported holder of COSTCO WHSL CORP NEW with $181.5M across 209,562 shares as of Q4 2025.
Where does this COSTCO WHSL CORP NEW data come from?
Every figure is rendered live from SEC Form 13F-HR filings in the EDGAR system. 13F is a mandatory quarterly disclosure of long US-listed equity positions, filed within 45 days of each quarter-end.

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.