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Ken Griffin's Protara Therapeutics, Inc. (TARA) position

Yes: as of Q1 2026, Ken Griffin holds 1.1M shares of TARA worth $5.6M (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
$5.6M
Shares held
1.1M
% of portfolio
0.0%
Est. average buy price (i)
$5.92
est. since Q1 2026
Quarter-end price
$5.21

Estimated trade prices

Average price in quarters with purchases
$4.27
Average prices in quarters with sales
  • Q1 2025: $4.47 (615K shares sold)
  • Q1 2024: $3.23 (12K shares sold)
  • Q2 2023: $2.97 (36K shares sold)
  • Q4 2022: $3.16 (156K shares sold)
  • Q3 2022: $3.39 (72K shares sold)
  • Q2 2022: $3.66 (164K shares sold)
  • Q1 2022: $5.26 (22K shares sold)

TARA price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$1$5$1020222023202420252026Added 4K shares (1.3%) · Q3 2021. Average closing price $7.80 · Price range $6.38–$9.304KsharespurchasedAdded 82K shares (23.7%) · Q4 2021. Average closing price $6.89 · Price range $6.15–$7.7682KsharespurchasedSold 22K shares (5.2%) · Q1 2022. Average closing price $5.26 · Price range $4.19–$6.9022KsharessoldSold 164K shares (40.3%) · Q2 2022. Average closing price $3.66 · Price range $2.80–$5.33164KsharessoldSold 72K shares (29.7%) · Q3 2022. Average closing price $3.39 · Price range $2.96–$4.2772KsharessoldSold 156K shares (91.3%) · Q4 2022. Average closing price $3.16 · Price range $2.43–$3.70156KsharessoldAdded 31K shares (211.1%) · Q1 2023. Average closing price $3.30 · Price range $2.76–$3.9131KsharespurchasedSold 36K shares (78.3%) · Q2 2023. Average closing price $2.97 · Price range $2.27–$3.5936KsharessoldAdded 12K shares (121.3%) · Q3 2023. Average closing price $2.29 · Price range $1.64–$2.9312KsharespurchasedAdded 16K shares (71.8%) · Q4 2023. Average closing price $1.47 · Price range $1.12–$1.9316KsharespurchasedSold 12K shares (31.8%) · Q1 2024. Average closing price $3.23 · Price range $1.86–$4.8312KsharessoldAdded 639K shares (over 1,000%) · Q2 2024. Average closing price $2.92 · Price range $1.96–$4.14639KsharespurchasedAdded 15K shares (2.3%) · Q3 2024. Average closing price $2.05 · Price range $1.70–$2.4015KsharespurchasedAdded 347K shares (51.0%) · Q4 2024. Average closing price $3.23 · Price range $1.62–$6.67347KsharespurchasedSold 615K shares (59.9%) · Q1 2025. Average closing price $4.47 · Price range $3.36–$6.14615KsharessoldAdded 90K shares (21.8%) · Q3 2025. Average closing price $3.24 · Price range $2.78–$4.4190KsharespurchasedAdded 399K shares (79.4%) · Q4 2025. Average closing price $5.56 · Price range $4.22–$7.56399Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$5.56
Price range · filing quarter
$4.22 – $7.56
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 First covered – – – 1.1M May 15, 2026
Q4 2025 Added +399K +$2.2M +79.4% 902K Feb 17, 2026
Q3 2025 Added +90K +$291K +21.8% 502K Nov 14, 2025
Q2 2025 Unchanged – – – 413K Aug 14, 2025
Q1 2025 Reduced −615K −$2.7M −59.9% 413K May 15, 2025
Q4 2024 Added +347K +$1.1M +51.0% 1.0M Feb 14, 2025
Q3 2024 Added +15K +$31K +2.3% 681K Nov 14, 2024
Q2 2024 Added +639K +$1.9M +2,464.3% 665K Aug 14, 2024
Q1 2024 Reduced −12K −$39K −31.8% 26K May 15, 2024
Q4 2023 Added +16K +$23K +71.8% 38K Feb 14, 2024
Q3 2023 Added +12K +$28K +121.3% 22K Nov 14, 2023
Q2 2023 Reduced −36K −$107K −78.3% 10K Aug 14, 2023
Q1 2023 Added +31K +$104K +211.1% 46K May 15, 2023
Q4 2022 Reduced −156K −$491K −91.3% 15K Feb 14, 2023
Q3 2022 Reduced −72K −$244K −29.7% 171K Nov 14, 2022
Q2 2022 Reduced −164K −$599K −40.3% 243K Aug 15, 2022
Q1 2022 Reduced −22K −$116K −5.2% 406K May 16, 2022
Q4 2021 Added +82K +$565K +23.7% 428K Feb 14, 2022
Q3 2021 Added +4K +$34K +1.3% 346K Nov 15, 2021
Q2 2021 Added +101K +$1.1M +41.6% 342K Aug 16, 2021
Q1 2021 First covered – – – 242K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
21 grouped rows from 21 quarters

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Common questions

Does Ken Griffin own TARA?

Yes. As of Q1 2026, Ken Griffin disclosed 1.1M shares of TARA, worth $5.6M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy TARA?

Ken Griffin held TARA 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 TARA?

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

How many shares of TARA does Ken Griffin own?

Ken Griffin disclosed 1.1M shares of TARA 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 TARA?

Ken Griffin began building the TARA 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.