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Jim Simons's Pacific Biosciences of California, Inc. (PACB) position

Yes: as of Q1 2026, Jim Simons holds 2.5M shares of PACB worth $3.3M (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$3.3M
Shares held
2.5M
% of portfolio
0.0%
Est. average buy price (i)
$1.92
Quarter-end price
$1.32

Estimated trade prices

Average price in quarters with purchases
$2.66
Average prices in quarters with sales
  • Q1 2026: $1.79 (1.4M shares sold)

PACB price vs Simons's position

1Y 3Y 5Y MAX
Dates
$0.9$5$10$15202420252026New position of 327K shares · Q3 2023. Average closing price $11.43 · Price range $8.23–$13.93327KsharespurchasedNew position of 3.9M shares · Q4 2025. Average closing price $1.92 · Price range $1.38–$2.633.9MsharespurchasedSold 1.4M shares (35.4%) · Q1 2026. Average closing price $1.79 · Price range $1.26–$2.671.4Msharessold← Earlier —2 purchases, 2 sells
Average closing price · filing quarter
$1.79
Price range · filing quarter
$1.26 – $2.67
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −1.4M −$2.4M −35.4% 2.5M May 14, 2026
Q4 2025 New +3.9M +$7.4M – 3.9M Feb 12, 2026
Q3 2023 New +327K +$3.7M – 327K Nov 14, 2023
Q2 2022 Reduced −754K – −86.9% 114K Aug 12, 2022
Q1 2022 New +869K – – 869K May 13, 2022
Q3 2021 Reduced −547K – −66.6% 274K Nov 12, 2021
Q2 2021 Added +37K – +4.8% 821K Aug 13, 2021
Q1 2021 First covered – – – 784K May 13, 2021
Data through Q1 2026 · filed May 14, 2026
8 grouped rows from 8 quarters

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Common questions

Does Jim Simons own PACB?

Yes. As of Q1 2026, Jim Simons disclosed 2.5M shares of PACB, worth $3.3M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy PACB?

Jim Simons held PACB 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 Jim Simons sell PACB?

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

How many shares of PACB does Jim Simons own?

Jim Simons disclosed 2.5M shares of PACB as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for PACB?

Jim Simons's estimated average buy price for PACB is $1.92, 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.