Position in SION
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$260,383,026
-$17,104,710 QoQ
Shares Held
6,494,962
-3.7% QoQ
Ownership
14.4%
of shares outstanding
% of Portfolio
8.92%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2025
5 quarters on record
Voting authority
Sole 0.ToString("F0")%
Shared 100.ToString("F0")%
None 0.ToString("F0")%
Common Shares in SION Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026TPG GP A, LLC holds $371,578,392 across 6 Biotechnology names. SION ranks #1 (70.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SION |
Sionna Therapeutics, Inc.
This page
|
6,494,962 | $260,383,026 | |
| 2 | BCAX |
Bicara Therapeutics Inc.
|
3,010,425 | $59,877,353 | |
| 3 | ALLO |
Allogene Therapeutics, Inc.
|
18,716,306 | $45,667,786 | |
| 4 | RLYB |
Rallybio Corp
|
378,551 | $3,395,602 | |
| 5 | APLS |
Apellis Pharmaceuticals, Inc.
|
50,000 | $2,011,500 | |
| 6 | RVMD |
Revolution Medicines, Inc.
|
2,500 | $243,125 |
All Filings in SION
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6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $260,383,026 | 6,494,962 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $277,487,736 | 6,744,962 | Shares | Defined | 2026-02-13 | |
| 2025-09-30 | $198,369,332 | 6,744,962 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $117,025,090 | 6,744,962 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $69,924,702 | 6,684,962 | Shares | Defined | 2025-05-15 | |
| 2025-02-10 | $148,673,554 | 6,684,962 | Shares | Sole | 2025-02-18 | |
| No filing history on record for this holder in this stock. | ||||||