Save your place

Sign in to WhoBought

Please try again later.

Ken Griffin's STAAR Surgical Company (STAA) position

Yes: as of Q1 2026, Ken Griffin holds 1.1M shares of STAA worth an amount we cannot price (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
View full portfolio →
Current value
an amount we cannot price
Shares held
1.1M
% of portfolio
0.0%
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

STAA price vs Griffin's position

1Y 3Y 5Y MAX
Dates
← Earlier —10 purchases, 10 sells22242628
Average closing price · filing quarter
—
Price range · filing quarter
—
Sign in to see who bought

Every quarterly change

Every quarterly change
Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Added· Q1 2026 +854K
Quarter Q1 2026 Δ Own +416.5% Shares held 1.1M Filing date May 15, 2026
Q1 2026 Added· Q1 2026 +854K – +416.5% 1.1M May 15, 2026
Added· Q4 2025 +62K
Quarter Q4 2025 Δ Own +43.0% Shares held 205K Filing date Feb 17, 2026
Q4 2025 Added· Q4 2025 +62K – +43.0% 205K Feb 17, 2026
Reduced· Q3 2025 −412K
Quarter Q3 2025 Δ Own −74.2% Shares held 143K Filing date Nov 14, 2025
Q3 2025 Reduced· Q3 2025 −412K – −74.2% 143K Nov 14, 2025
Added· Q2 2025 +308K
Quarter Q2 2025 Δ Own +124.3% Shares held 555K Filing date Aug 14, 2025
Q2 2025 Added· Q2 2025 +308K – +124.3% 555K Aug 14, 2025
Reduced· Q1 2025 −74K
Quarter Q1 2025 Δ Own −23.0% Shares held 247K Filing date May 15, 2025
Q1 2025 Reduced· Q1 2025 −74K – −23.0% 247K May 15, 2025
Reduced· Q4 2024 −613K
Quarter Q4 2024 Δ Own −65.6% Shares held 322K Filing date Feb 14, 2025
Q4 2024 Reduced· Q4 2024 −613K – −65.6% 322K Feb 14, 2025
Added· Q3 2024 +788K
Quarter Q3 2024 Δ Own +538.1% Shares held 934K Filing date Nov 14, 2024
Q3 2024 Added· Q3 2024 +788K – +538.1% 934K Nov 14, 2024
Reduced· Q2 2024 −57K
Quarter Q2 2024 Δ Own −28.2% Shares held 146K Filing date Aug 14, 2024
Q2 2024 Reduced· Q2 2024 −57K – −28.2% 146K Aug 14, 2024
Reduced· Q1 2024 −205K
Quarter Q1 2024 Δ Own −50.1% Shares held 204K Filing date May 15, 2024
Q1 2024 Reduced· Q1 2024 −205K – −50.1% 204K May 15, 2024
Reduced· Q4 2023 −537K
Quarter Q4 2023 Δ Own −56.8% Shares held 409K Filing date Feb 14, 2024
Q4 2023 Reduced· Q4 2023 −537K – −56.8% 409K Feb 14, 2024
Added· Q3 2023 +632K
Quarter Q3 2023 Δ Own +201.5% Shares held 946K Filing date Nov 14, 2023
Q3 2023 Added· Q3 2023 +632K – +201.5% 946K Nov 14, 2023
Added· Q2 2023 +311K
Quarter Q2 2023 Δ Own +11,802.3% Shares held 314K Filing date Aug 14, 2023
Q2 2023 Added· Q2 2023 +311K – +11,802.3% 314K Aug 14, 2023
Reduced· Q1 2023 −66K
Quarter Q1 2023 Δ Own −96.1% Shares held 3K Filing date May 15, 2023
Q1 2023 Reduced· Q1 2023 −66K – −96.1% 3K May 15, 2023
Added· Q4 2022 +22K
Quarter Q4 2022 Δ Own +47.7% Shares held 68K Filing date Feb 14, 2023
Q4 2022 Added· Q4 2022 +22K – +47.7% 68K Feb 14, 2023
Added· Q3 2022 +36K
Quarter Q3 2022 Δ Own +344.0% Shares held 46K Filing date Nov 14, 2022
Q3 2022 Added· Q3 2022 +36K – +344.0% 46K Nov 14, 2022
Data through Q1 2026 · filed May 15, 2026
15 of 21

More Griffin positions

NVIDIA Corporation(NVDA)
$3.2B
2.3% of portfolio

Amazon.com, Inc.(AMZN)
$1.7B
1.2% of portfolio

Micron Technology, Inc.(MU)
$1.6B
1.1% of portfolio

Taiwan Semiconductor Manufacturing Company Limited(TSM)
$1.4B
1.0% of portfolio

Apple Inc.(AAPL)
$1.3B
0.9% of portfolio

Meta Platforms, Inc.(META)
$1.0B
0.7% of portfolio

Common questions

Does Ken Griffin own STAA?

Yes. As of Q1 2026, Ken Griffin disclosed 1.1M shares of STAA, worth an amount we cannot price. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy STAA?

Ken Griffin held STAA since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell STAA?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in STAA. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of STAA does Ken Griffin own?

Ken Griffin disclosed 1.1M shares of STAA as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for STAA?

Ken Griffin began building the STAA position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.