Save your place

Sign in to WhoBought

Please try again later.

Ken Griffin's Tower Semiconductor Ltd. (TSEM) position

Yes: as of Q1 2026, Ken Griffin holds 3K shares of TSEM 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
3K
% 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.

TSEM price vs Griffin's position

1Y 3Y 5Y MAX
Dates
← Earlier —8 purchases, 11 sells150200250300
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
Reduced· Q1 2026 −58K
Quarter Q1 2026 Δ Own −94.4% Shares held 3K Filing date May 15, 2026
Q1 2026 Reduced· Q1 2026 −58K – −94.4% 3K May 15, 2026
Reduced· Q4 2025 −91K
Quarter Q4 2025 Δ Own −59.6% Shares held 62K Filing date Feb 17, 2026
Q4 2025 Reduced· Q4 2025 −91K – −59.6% 62K Feb 17, 2026
Added· Q3 2025 +142K
Quarter Q3 2025 Δ Own +1,289.7% Shares held 153K Filing date Nov 14, 2025
Q3 2025 Added· Q3 2025 +142K – +1,289.7% 153K Nov 14, 2025
New· Q2 2025 +11K
Quarter Q2 2025 Shares held 11K Filing date Aug 14, 2025
Q2 2025 New· Q2 2025 +11K – – 11K Aug 14, 2025
Added· Q4 2024 +240K
Quarter Q4 2024 Δ Own +238.8% Shares held 341K Filing date Feb 14, 2025
Q4 2024 Added· Q4 2024 +240K – +238.8% 341K Feb 14, 2025
Reduced· Q3 2024 −157K
Quarter Q3 2024 Δ Own −60.9% Shares held 101K Filing date Nov 14, 2024
Q3 2024 Reduced· Q3 2024 −157K – −60.9% 101K Nov 14, 2024
Reduced· Q2 2024 −82K
Quarter Q2 2024 Δ Own −24.1% Shares held 257K Filing date Aug 14, 2024
Q2 2024 Reduced· Q2 2024 −82K – −24.1% 257K Aug 14, 2024
Added· Q1 2024 +15K
Quarter Q1 2024 Δ Own +4.5% Shares held 339K Filing date May 15, 2024
Q1 2024 Added· Q1 2024 +15K – +4.5% 339K May 15, 2024
Reduced· Q4 2023 −497K
Quarter Q4 2023 Δ Own −60.5% Shares held 324K Filing date Feb 14, 2024
Q4 2023 Reduced· Q4 2023 −497K – −60.5% 324K Feb 14, 2024
Added· Q3 2023 +719K
Quarter Q3 2023 Δ Own +699.1% Shares held 822K Filing date Nov 14, 2023
Q3 2023 Added· Q3 2023 +719K – +699.1% 822K Nov 14, 2023
Reduced· Q2 2023 −9K
Quarter Q2 2023 Δ Own −8.2% Shares held 103K Filing date Aug 14, 2023
Q2 2023 Reduced· Q2 2023 −9K – −8.2% 103K Aug 14, 2023
Reduced· Q1 2023 −488K
Quarter Q1 2023 Δ Own −81.3% Shares held 112K Filing date May 15, 2023
Q1 2023 Reduced· Q1 2023 −488K – −81.3% 112K May 15, 2023
Added· Q4 2022 +520K
Quarter Q4 2022 Δ Own +646.5% Shares held 600K Filing date Feb 14, 2023
Q4 2022 Added· Q4 2022 +520K – +646.5% 600K Feb 14, 2023
Reduced· Q3 2022 −210K
Quarter Q3 2022 Δ Own −72.3% Shares held 80K Filing date Nov 14, 2022
Q3 2022 Reduced· Q3 2022 −210K – −72.3% 80K Nov 14, 2022
Reduced· Q2 2022 −44K
Quarter Q2 2022 Δ Own −13.2% Shares held 291K Filing date Aug 15, 2022
Q2 2022 Reduced· Q2 2022 −44K – −13.2% 291K Aug 15, 2022
Data through Q1 2026 · filed May 15, 2026
15 of 20

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 TSEM?

Yes. As of Q1 2026, Ken Griffin disclosed 3K shares of TSEM, 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 TSEM?

Ken Griffin held TSEM 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 TSEM?

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

How many shares of TSEM does Ken Griffin own?

Ken Griffin disclosed 3K shares of TSEM 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 TSEM?

Ken Griffin began building the TSEM 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.