Position in CYTK
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$89,287,894
+$42,713,845 QoQ
Shares Held
1,048,103
+48.3% QoQ
Ownership
0.754%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#34
of 477 holders
Holding Since
Mar 2020
16 quarters on record
Voting authority
Sole 90%
Shared 0%
None 10%
Common Shares in CYTK Over Time
Shares Held
Position Value (USD)
Derivatives in CYTK
reported options exposure · as of Mar 31, 2026CallValue
$2,682,537
CallShares
40,700
PutValue
$0
PutShares
0
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. CYTK ranks #16 (1.8% 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 CYTK
Export CSV
25 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $89,287,894 | 1,048,103 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $46,574,049 | 706,631 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $2,682,537 | 40,700 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $7,575,302 | 119,221 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $5,178,510 | 81,500 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $1,011,264 | 18,400 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $3,995,592 | 72,700 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $747,620 | 13,603 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $2,696,064 | 81,600 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $918,512 | 27,800 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $630,535 | 19,084 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $534,607 | 13,302 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $2,921,813 | 72,700 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $3,965,472 | 84,300 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $6,299,040 | 119,300 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $622,512 | 11,790 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $6,463,674 | 119,300 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $4,508,073 | 64,300 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $2,562,800 | 36,554 | Shares | Defined | 2024-05-15 | |
| 2022-09-30 | $2,031,750 | 41,935 | Shares | Defined | 2022-11-14 | |
| 2021-12-31 | $4,844,287 | 106,281 | Shares | Defined | 2022-02-14 | |
| 2021-03-31 | $2,145,664 | 92,247 | Shares | Defined | 2021-05-17 | |
| 2020-12-31 | $1,058,076 | 50,918 | Shares | Defined | 2021-02-16 | |
| 2020-06-30 | $1,155,589 | 49,028 | Shares | Defined | 2020-08-14 | |
| 2020-03-31 | $391,722 | 33,225 | Shares | Defined | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||