Historical position

George Soros’s Costco (COST) position

Reported position history, portfolio importance and verified filing changes from public SEC disclosures.

Soros Fund ManagementVerified through Q2 2026
Relationship snapshot

At a glance

The full verified relationship, including prior ownership episodes and exits where supported.

First reportedQ2 2000Earliest verified positive filing snapshot
Latest statusHistorical positionBased on the latest supported relationship state
Peak shares400.00KHighest verified quarter-end share count
Quarters reported10Verified quarters with shares above zero
What happened?

Soros Fund Management first reported Costco in Q2 2000. The reported position was increased and reduced across later filings. Verified positive position history runs through Q4 2012. The current relationship status cannot be determined reliably from supported data.

Verified SEC history

Position over time

See the same verified relationship through reported shares, portfolio weight or reported value.

Metric

Gaps indicate periods that cannot be safely connected or where a verified corporate action changes the raw share scale. Stock price, when available, is market context and not a transaction price.

Key filing events

What changed

Latest filing plus the most meaningful reported changes. Unchanged quarters are collapsed by default.

Q1 2013
Sold the entire position−400.00K shares · No shares reported at quarter-end
Q4 2012
New position+400.00K shares · 400.00K shares reported
Filing context

Quarter-end price $98.77 · Estimated holding basis $98.77

Q1 2011
Sold the entire position−7.40K shares · No shares reported at quarter-end
Q4 2010
Bought 45.1% more+2.30K shares · 7.40K shares reported after the change
Filing context

Quarter-end price $72.16 · Estimated holding basis $66.89

Q4 2009
Sold 91.4% of the position−43.60K shares · 4.10K shares remained
Filing context

Quarter-end price $59.27 · Estimated holding basis $56.37

Q3 2009
New position+47.70K shares · 47.70K shares reported
Filing context

Quarter-end price $56.37 · Estimated holding basis $56.37

Portfolio importance

How important was Costco in Soros Fund Management’s reported portfolio?

Relative importance is measured only within the verified primary non-option reported portfolio for each quarter.

Last reported portfolio weight0.5%Q4 2012
Last reported rank#49of 170 reported positions
Peak portfolio weight0.5%Q4 2012
Best historical rank#49Q4 2012
At peak importanceQ4 2012
COST
0.5%
Largest holding
10.0%
Cross-investor discovery

Who else owns Costco?

Also reported by 4 other tracked investors in their latest verified filings.

Christopher BloomstranSemper Augustus Investments Group LLC
COST0.4% of reported portfolio
Ray DalioBridgewater Associates, LP
COST0.1% of reported portfolio
Joel GreenblattGotham Asset Management
COST0.1% of reported portfolio
Explore Costco across all tracked investors →
SEC evidence & methodology

SEC filing evidence

Market context and filing-derived values are kept separate from actual transaction prices, which 13F filings do not disclose.

Latest verified stock price$904.772026-09-11

Market context only; not an investor transaction price.

Latest verified investor filingQ2 2026 · filed 2026-08-14
Open SEC filing ↗

View Costco stock page →

This tracker follows Soros Fund Management LLC’s Form 13F disclosures—not George Soros’s personal brokerage account. George Soros founded the firm; its current CEO and chief investment officer is Dawn Fitzpatrick. Form 13F does not reveal exact trade dates, execution prices or the purpose of an option position.