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CITIGROUP INC

Position in PRTA — Prothena Corp Public Ltd Co

CIK 831001 NEW YORK, NY

Position in PRTA

as of Jun 30, 2026 · filed Aug 3, 2026
Position Value
$566,125
+$486,908 QoQ
Shares Held
57,827
+609.5% QoQ
Ownership
0.113%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#63
of 187 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in PRTA Over Time

Shares Held

Position Value (USD)

Derivatives in PRTA

reported options exposure · as of Jun 30, 2023
CallValue
$1,707,000
CallShares
25,000
PutValue
$1,707,000
PutShares
25,000

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 Jun 30, 2026

CITIGROUP INC holds $2,077,377,990 across 384 Biotechnology names. PRTA ranks #173 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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28 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $566,125 57,827
2026-03-31 $79,217 8,150
2025-12-31 $117,636 12,318
2025-09-30 $35,056 3,592
2025-06-30 $299,268 49,303
2025-03-31 $814,595 65,826
2024-12-31 $947,795 68,433
2024-09-30 $536,596 32,074
2024-06-30 $509,063 24,664
2024-03-31 $6,437,027 259,872
2023-12-31 $3,182,692 87,581
2023-09-30 $3,277,621 67,930
2023-06-30 $1,707,000 25,000
2023-06-30 $1,707,000 25,000
2023-06-30 $3,246,849 47,552
2023-03-31 $5,564,355 114,800
2022-12-31 $3,819,848 63,400
2022-09-30 $5,950,469 98,144
2022-06-30 $2,318,120 85,382
2022-03-31 $935,641 25,585
2021-12-31 $4,954,226 100,288
2021-09-30 $3,795,489 53,285
2021-06-30 $2,897,055 56,352
2021-03-31 $1,383,985 55,095
2020-12-31 $90,938 7,572
2020-09-30 $29,039 2,907
2020-06-30 $229,584 21,949
2020-03-31 $211,344 19,752