Position in PRTA
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$15,776,164
-$1,363,568 QoQ
Shares Held
1,611,457
-8.6% QoQ
Ownership
3.14%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#7
of 187 holders
Holding Since
Mar 2020
20 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PRTA Over Time
Shares Held
Position Value (USD)
Derivatives in PRTA
reported options exposure · as of Jun 30, 2024CallValue
$0
CallShares
0
PutValue
$229,104
PutShares
11,100
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Biotechnology
Healthcare · as of Jun 30, 2026D. E. Shaw & Co., Inc. holds $5,017,559,982 across 217 Biotechnology names. PRTA ranks #60 (0.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | INSM |
INSMED Inc
|
5,877,959 | $626,707,987 | |
| 2 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,104,109 | $332,369,932 | |
| 3 | EXEL |
Exelixis, Inc.
|
5,551,747 | $302,070,554 | |
| 4 | BBIO |
BridgeBio Pharma, Inc.
|
3,633,007 | $270,586,360 | |
| 5 | TGTX |
Tg Therapeutics, Inc.
|
3,400,808 | $186,840,390 | |
| 6 | HALO |
Halozyme Therapeutics, Inc.
|
2,006,479 | $157,047,110 | |
| 7 | AXSM |
Axsome Therapeutics, Inc.
|
604,753 | $148,025,391 | |
| 8 | PTCT |
Ptc Therapeutics, Inc.
|
1,548,919 | $126,345,322 |
All Filings in PRTA
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $15,776,164 | 1,611,457 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $17,139,732 | 1,763,347 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $16,057,073 | 1,681,369 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $12,838,479 | 1,315,418 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $2,376,374 | 391,495 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $220,312 | 17,803 | Shares | Defined | 2025-05-15 | |
| 2024-06-30 | $229,104 | 11,100 | Put | Defined | 2024-08-14 | |
| 2023-03-31 | $276,521 | 5,705 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $1,618,074 | 26,856 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $6,380,094 | 105,230 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $1,661,471 | 61,196 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 | $363,810 | 13,400 | Put | Defined | 2022-08-15 | |
| 2022-03-31 | $3,187,185 | 87,153 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $490,038 | 13,400 | Put | Defined | 2022-05-16 | |
| 2021-12-31 | $5,536,011 | 112,065 | Shares | Defined | 2022-02-14 | |
| 2021-12-31 | $661,960 | 13,400 | Put | Defined | 2022-02-14 | |
| 2021-09-30 | $2,279,360 | 32,000 | Put | Defined | 2021-11-15 | |
| 2021-09-30 | $2,373,454 | 33,321 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $1,043,365 | 20,295 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $1,489,565 | 59,298 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $2,565,443 | 213,609 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $2,941,734 | 294,468 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $3,654,482 | 349,377 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $3,621,403 | 338,449 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||