Position in ZLAB
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$1,189,600
-$3,019,462 QoQ
Shares Held
63,243
-73.5% QoQ
Ownership
0.004%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ZLAB Over Time
Shares Held
Position Value (USD)
Derivatives in ZLAB
reported options exposure · as of Sep 30, 2024CallValue
$0
CallShares
0
PutValue
$1,665,660
PutShares
69,000
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 Mar 31, 2026D. E. Shaw & Co., Inc. holds $4,382,181,502 across 180 Biotechnology names. ZLAB ranks #134 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | INSM |
INSMED Inc
|
5,625,825 | $919,934,903 | |
| 2 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
1,059,062 | $350,411,843 | |
| 3 | BBIO |
BridgeBio Pharma, Inc.
|
2,545,486 | $189,027,789 | |
| 4 | PCVX |
Vaxcyte, Inc.
|
2,865,318 | $166,503,628 | |
| 5 | EXEL |
Exelixis, Inc.
|
3,603,063 | $154,535,371 | |
| 6 | HALO |
Halozyme Therapeutics, Inc.
|
1,868,708 | $120,774,597 | |
| 7 | PTCT |
Ptc Therapeutics, Inc.
|
1,640,381 | $111,759,157 | |
| 8 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
248,960 | $111,170,598 |
All Filings in ZLAB
Export CSV
30 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,189,600 | 63,243 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $4,209,062 | 238,609 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $1,162,088 | 34,290 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $9,779,745 | 279,661 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $11,129,493 | 307,955 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $1,922,660 | 73,412 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $213,614 | 8,849 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $1,665,660 | 69,000 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $1,195,770 | 69,000 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $301,663 | 17,407 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $241,245 | 15,059 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $512,640 | 32,000 | Put | Defined | 2024-05-15 | |
| 2023-09-30 | $332,828 | 13,691 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $1,497,946 | 54,019 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $1,812,304 | 54,489 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $764,829 | 24,913 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $858,864 | 25,113 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $3,524,909 | 101,641 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $2,123,882 | 48,292 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $3,006,241 | 47,832 | Shares | Defined | 2022-02-14 | |
| 2021-09-30 | $263,475 | 2,500 | Put | Defined | 2021-11-15 | |
| 2021-09-30 | $20,868,590 | 198,013 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $8,448,263 | 47,733 | Shares | Defined | 2021-08-16 | |
| 2021-06-30 | $442,475 | 2,500 | Put | Defined | 2021-08-16 | |
| 2021-03-31 | $333,575 | 2,500 | Put | Defined | 2021-05-17 | |
| 2021-03-31 | $24,582,075 | 184,232 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $30,656,404 | 226,514 | Shares | Defined | 2021-02-16 | |
| 2020-09-30 | $14,752,445 | 177,377 | Shares | Defined | 2020-11-16 | |
| 2020-06-30 | $6,153,343 | 74,922 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $7,096,363 | 137,847 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||