Position in BSX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$10,670,000
+$10,670,000 QoQ
Shares Held
250,000
Ownership
0.017%
of shares outstanding
% of Portfolio
1.50%
of 13F equity value
Holder Rank
#298
of 1,444 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Derivatives in BSX
reported options exposure · as of Mar 31, 2026CallValue
$31,375,000
CallShares
500,000
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 Medical Devices
Healthcare · as of Jun 30, 2026MASTERS CAPITAL MANAGEMENT LLC holds $43,491,000 across 5 Medical Devices names. BSX ranks #2 (24.5% of the industry book) .
All Filings in BSX
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2 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $10,670,000 | 250,000 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $31,375,000 | 500,000 | Call | Sole | 2026-05-15 | |
| No filing history on record for this holder in this stock. | ||||||