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

According to SEC Form 13F-HR filings in this corpus, COSTCO WHSL CORP NEW ranks #20 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. 27 institutions report $438.0M 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
#20
of 775 by value

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

According to SEC Form 13F-HR filings in this corpus, COSTCO WHSL CORP NEW ranks #20 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP 22160K105 · Q4 2025 $438M reported

VALUE-MEGA · HOLDERS-NARROW · CONC-DOM · PHOTO-FINISH · ACTIVITY-HOT · BOOK-FULL

  • VALUE-MEGA #20/775
  • HOLDERS-NARROW 27 filers
  • CONC-DOM 88% top-5
  • PHOTO-FINISH ALTRIA GROUP
  • ACTIVITY-HOT 24 new
  • BOOK-FULL 8Q history

Photo-finish peer on reported value: ALTRIA GROUP INC

Read with: Ownership concentration guide - COSTCO WHSL CORP NEW's top-five holders account for 88% of reported value — read concentration before treating any single filer as a signal.

Reported-value neighbourhood · COSTCO WHSL CORP NEW

Nearest tracked securities by aggregate 13F reported value, not a full corpus reprint.

ALTRIA GROUP · near$440MCOSTCO WHSL NEW · this stock$438MAMGEN · near$436MVISA · near$435MVERIZON COMMUNICATIO… · near$435M
Aggregate reported institutional value ($)

COSTCO WHSL CORP NEW vs. the broadly-held institutional universe

Where this security's reporting-institution count sits among tracked 13F securities

27 Top 9% higher than 91% of 216 securities

Broadly-held tracked securities, banded by reporting-institution count

Each bar is a band; taller bars hold more securities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source SEC Form 13F-HR filings · Q4 2025

Largest institutional holders of COSTCO WHSL CORP NEW
  1. 1
    Banque Transatlantique SA $181.5M
  2. 2
    MARINER INVESTMENT GROUP LLC $107.8M
  3. 3
    Pacer Advisors, Inc. $63.9M
  4. 4
    Oak Grove Capital LLC $16.7M
  5. 5
    Cross Staff Investments Inc $16.0M
  6. 6
    GROUPAMA ASSET MANAGMENT $15.1M

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%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among COSTCO WHSL CORP NEW's reported holders for Q4 2025, by reported value:

Shared-defined discretion (DFND)
66.0%
Sole discretion (SOLE)
34.0%

Latest Quarter Activity · Q4 2025

New positions (24)

Banque Transatlantique SA $181.5M
MARINER INVESTMENT GROUP LLC $107.8M
Pacer Advisors, Inc. $63.9M
Oak Grove Capital LLC $16.7M
Cross Staff Investments Inc $16.0M
GROUPAMA ASSET MANAGMENT $15.1M

Complete exits (36)

CIBC Bancorp USA Inc. exited
Maple Capital Management, Inc. exited
Kimelman & Baird, LLC exited
Liontrust Investment Partners LLP exited
CONNORS INVESTOR SERVICES INC exited
Blue Fin Capital, Inc. exited

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.
Where does COSTCO WHSL CORP NEW sit among tracked securities?▼
According to SEC Form 13F-HR filings in this corpus, COSTCO WHSL CORP NEW ranks #20 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. The ordinal is recomputed live among securities with ≥5 reporting holders. See /methodology/#corpus-placement.
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.

Nationwide stocks with similar institutional value or holder count

Two 13F-derived peer sets for COSTCO WHSL CORP NEW: nearest aggregate reported value and nearest institutional holder count, not catalog browse links.

Similar reported value

Nearest stocks by aggregate 13F reported value ($438.0M here).

ALTRIA GROUP INC $440.3M AMGEN INC $435.6M VISA INC $435.4M VERIZON COMMUNICATIONS I $434.7M

Similar holder count

Nearest stocks by number of disclosing 13F holders (27 here).

ELI LILLY & CO 27 BROADCOM INC 28 INVSC QQQ TRUST SRS 1 28 JOHNSON & JOHNSON 28

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.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-16.