Current position

Two Sigma Investments, LP’s Costco (COST) position

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

Two Sigma Investments, LPVerified through Q2 2026
Relationship snapshot

At a glance

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

First reportedQ3 2021Earliest verified positive filing snapshot
Latest statusCurrent positionBased on the latest supported relationship state
Peak shares1.01MHighest verified quarter-end share count
Quarters reported16Verified quarters with shares above zero
What happened?

Two Sigma Investments, LP first reported Costco in Q3 2021. The reported position was increased and reduced across later filings. Two Sigma Investments, LP currently reports 1.01M shares. The latest verified filing showed: Bought 15.0% more.

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.

Q2 2026
Bought 15.0% more+131.44K shares · 1.01M shares reported after the change
Filing context

Quarter-end price $935.47 · Estimated holding basis $936.88

Q1 2026
Bought 237.6% more+615.67K shares · 874.79K shares reported after the change
Filing context

Quarter-end price $996.43 · Estimated holding basis $937.09

Q4 2025
Bought 3.3% more+8.23K shares · 259.12K shares reported after the change
Filing context

Quarter-end price $862.34 · Estimated holding basis $796.11

Q3 2025
Bought 7.2% more+16.78K shares · 250.90K shares reported after the change
Filing context

Quarter-end price $925.63 · Estimated holding basis $793.94

Q2 2025
Bought 90.3% more+111.10K shares · 234.12K shares reported after the change
Filing context

Quarter-end price $989.94 · Estimated holding basis $784.50

Q1 2025
Sold 27.2% of the position−45.88K shares · 123.02K shares remained
Filing context

Quarter-end price $945.78 · Estimated holding basis $598.96

Portfolio importance

How important is Costco in Two Sigma Investments, LP’s reported portfolio?

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

Current portfolio weight0.7%Q2 2026
Current rank#9of 5017 reported positions
Peak portfolio weight0.7%Q1 2026
Best historical rank#8Q1 2026
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$898.482026-09-21

Market context only; not an investor transaction price.

Latest filing quarter-end price$935.47Q2 2026

Derived from validated reported value and shares where supported.

Estimated holding basis$936.88Historical reference — not actual purchase price

Calculated from supported filing history.

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

View Costco stock page →

Coverage is bounded to the institution’s top reported positions and material events rather than every security in each Form 13F. The filing reflects reportable U.S.-listed holdings, not Two Sigma’s complete trading book, models, short positions, exact trade dates or execution prices. Options are reported separately.