Position in IRON
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$4,647,169
+$1,223,950 QoQ
Shares Held
63,538
+18.7% QoQ
Ownership
0.165%
of shares outstanding
% of Portfolio
0.68%
of 13F equity value
Holder Rank
#64
of 216 holders
Holding Since
Mar 2023
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IRON Over Time
Shares Held
Position Value (USD)
Derivatives in IRON
reported options exposure · as of Mar 31, 2024CallValue
$1,556,500
CallShares
25,000
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, 2026SPHERA FUNDS MANAGEMENT LTD. holds $446,002,188 across 71 Biotechnology names. IRON ranks #34 (1.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MLYS |
Mineralys Therapeutics, Inc.
|
1,469,971 | $39,659,817 | |
| 2 | SNDX |
Syndax Pharmaceuticals Inc
|
1,014,606 | $22,179,287 | |
| 3 | RARE |
Ultragenyx Pharmaceutical Inc.
|
588,494 | $19,649,814 | |
| 4 | BMRN |
Biomarin Pharmaceutical Inc
|
328,550 | $18,799,631 | |
| 5 | CYTK |
Cytokinetics Inc
|
219,987 | $18,740,692 | |
| 6 | BBIO |
BridgeBio Pharma, Inc.
|
245,346 | $18,273,370 | |
| 7 | COGT |
Cogent Biosciences, Inc.
|
459,340 | $17,776,458 | |
| 8 | INSM |
INSMED Inc
|
118,800 | $12,666,456 |
All Filings in IRON
Export CSV
8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $4,647,169 | 63,538 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $3,423,219 | 53,538 | Shares | Defined | 2026-05-15 | |
| 2024-06-30 | $2,616,043 | 58,044 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $3,043,642 | 48,886 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $1,556,500 | 25,000 | Call | Defined | 2024-05-15 | |
| 2023-09-30 | $5,233,478 | 111,398 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $7,573,663 | 170,578 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $4,662,075 | 220,013 | Shares | Defined | 2023-05-15 | |
| No filing history on record for this holder in this stock. | ||||||