Cornerstone Select Advisors, LLC
Position in PRTA — Prothena Corp Public Ltd Co
CIK 2055366
St. Louis, MO
Position in PRTA
as of Jun 30, 2026
· filed Aug 5, 2026
Position Value
$97,900
New position
Shares Held
10,000
first reported quarter
Ownership
0.019%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
#119
of 187 holders
Holding Since
Jun 2026
1 quarter on record
Voting authority
Sole 0%
Shared 0%
None 100%
Position in Biotechnology
Healthcare · as of Jun 30, 2026Cornerstone Select Advisors, LLC holds $2,324,605 across 3 Biotechnology names. PRTA ranks #2 (4.2% of the industry book) .
All Filings in PRTA
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1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $97,900 | 10,000 | Shares | Sole | 2026-08-05 | |
| No filing history on record for this holder in this stock. | ||||||