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Ken Griffin's Tempus AI, Inc. (TEM) position

Yes: as of Q1 2026, Ken Griffin holds 601K shares of TEM worth $27M (0.0% of the disclosed portfolio). Last quarter the position was reduced by 33.4%. First disclosed Q2 2024.
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Current value
$27M
Shares held
601K
% of portfolio
0.0%
Est. average buy price (i)
$77.83
est. since Q1 2025
Quarter-end price
$45.22

Estimated trade prices

Average price in quarters with purchases
$61.76
Average prices in quarters with sales
  • Q1 2026: $56.87 (301K shares sold)
  • Q3 2025: $70.07 (71K shares sold)
  • Q2 2025: $57.34 (13K shares sold)

TEM price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$20$50$10020252026New position of 419K shares · Q2 2024. Average closing price $30.66 · Price range $24.96–$40.25419KsharespurchasedNew position of 132K shares · Q4 2024. Average closing price $49.45 · Price range $33.03–$77.62132KsharespurchasedSold 13K shares (13.0%) · Q2 2025. Average closing price $57.34 · Price range $37.23–$72.0013KsharessoldSold 71K shares (80.2%) · Q3 2025. Average closing price $70.07 · Price range $54.89–$88.7871KsharessoldAdded 885K shares (over 1,000%) · Q4 2025. Average closing price $78.30 · Price range $59.05–$103.25885KsharespurchasedSold 301K shares (33.4%) · Q1 2026. Average closing price $56.87 · Price range $42.37–$70.33301Ksharessold
Average closing price · filing quarter
$56.87
Price range · filing quarter
$42.37 – $70.33
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −301K −$17M −33.4% 601K May 15, 2026
Q4 2025 Added +885K +$69M +5,044.3% 903K Feb 17, 2026
Q3 2025 Reduced −71K −$5.0M −80.2% 18K Nov 14, 2025
Q2 2025 Reduced −13K −$759K −13.0% 89K Aug 14, 2025
Q1 2025 First covered – – – 102K May 15, 2025
Q4 2024 New +132K +$6.5M – 132K Feb 14, 2025
Q2 2024 New +419K +$13M – 419K Aug 14, 2024
Data through Q1 2026 · filed May 15, 2026
7 grouped rows from 7 quarters

Who else owns TEM

Ark Investment Management LLC

 View investor →
owns 5.5% of shares outstanding
Est. $434M · Shares: 9.6M

Baillie Gifford & Co
owns 5.0% of shares outstanding
Est. $391M · Shares: 8.6M

Gc Wealth Management Ria, LLC
owns 3.8% of shares outstanding
Est. $299M · Shares: 6.6M

Softbank Group Corp.
owns 3.1% of shares outstanding
Est. $244M · Shares: 5.4M

See all owners of TEM →

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 TEM?

Yes. As of Q1 2026, Ken Griffin disclosed 601K shares of TEM, worth $27M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy TEM?

Ken Griffin first disclosed a TEM position in Q2 2024; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell TEM?

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

How many shares of TEM does Ken Griffin own?

Ken Griffin disclosed 601K shares of TEM 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 TEM?

Ken Griffin began building the TEM 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.