Jim Simons's Tempus AI, Inc. (TEM) position

Not anymore: Jim Simons fully exited TEM in Q1 2026. The position peaked at $36M in Q3 2025.

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Value at exit

$5.2M

Shares at exit

89K

Est. average buy price (i)

$70.07

Quarter-end price

$59.05

Estimated trade prices

Average price in quarters with purchases: $70.07
Average prices in quarters with sales: Q4 2025: $78.30 (356K shares sold)

TEM price vs Simons's position

1Y 3Y 5Y MAX

Dates

Average closing price · filing quarter: $78.30
Price range · filing quarter: $59.05 – $103.25

Every quarterly change

Quarter	Action	Shares change	Est. value change	Δ Own	Shares held	Filing date
Q1 2026	Exited	−89K	−$5.0M	−100.0%	0	May 14, 2026
Q4 2025	Reduced	−356K	−$28M	−80.0%	89K	Feb 12, 2026
Q3 2025	New	+444K	+$31M	–	444K	Nov 13, 2025

Data through Q1 2026 · filed May 14, 2026

3 grouped rows from 3 quarters

Who else owns TEM

Ark Investment Management LLC

View investor →

owns 5.5% of shares outstanding

Est. $567M · Shares: 9.6M

Baillie Gifford & Co

owns 5.0% of shares outstanding

Est. $511M · Shares: 8.6M

Gc Wealth Management Ria, LLC

owns 3.8% of shares outstanding

Est. $390M · Shares: 6.6M

Softbank Group Corp.

owns 3.1% of shares outstanding

Est. $319M · Shares: 5.4M

See all owners of TEM →

More Simons positions

United Therapeutics Corporation(UTHR)

$1.1B

1.7% of portfolio

Palantir Technologies Inc.(PLTR)

$997M

1.6% of portfolio

Common questions

Does Jim Simons own TEM?

Not currently. Jim Simons fully exited TEM in Q1 2026, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy TEM?

Jim Simons first disclosed a TEM position in Q3 2025; 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 Jim Simons sell TEM?

Yes. Jim Simons reduced and then fully exited TEM by Q1 2026; the reductions are in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of TEM does Jim Simons own?

None as of the latest filing: Jim Simons has exited TEM. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for TEM?

Jim Simons's estimated average buy price for TEM is $70.07, from quarter-average prices weighted by the shares added each quarter. 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.