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Optiver Holding B.V.

Position in IRWD — Ironwood Pharmaceuticals Inc

CIK 1859606 AMSTERDAM, P7

Position in IRWD

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$5,314
+$2,153 QoQ
Shares Held
1,514
+61.4% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2024
7 quarters on record
Voting authority Sole 0% Shared 100% None 0%

Common Shares in IRWD Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Mar 31, 2026

Optiver Holding B.V. holds $781,789 across 20 Drug Manufacturers - Specialty & Generic names. IRWD ranks #5 (0.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 IRWD
Ironwood Pharmaceuticals Inc
This page
1,514 $5,314

All Filings in IRWD

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7 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $5,314 1,514
2025-12-31 $3,161 938
2025-09-30 $2,832 2,162
2025-06-30 $118 164
2025-03-31 $241 164
2024-12-31 $726 164
2024-06-30 $2,947 452