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STATE OF WISCONSIN INVESTMENT BOARD

Position in ASPN — Aspen Aerogels Inc

CIK 854157 MADISON, WI

Position in ASPN

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$351,151
+$10,878 QoQ
Shares Held
102,676
-14.6% QoQ
Ownership
0.124%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2021
19 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ASPN Over Time

Shares Held

Position Value (USD)

Position in Building Products & Equipment

Industrials · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $207,810,860 across 24 Building Products & Equipment names. ASPN ranks #21 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ASPN

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19 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $351,151 102,676
2025-12-31 $340,273 120,238
2025-09-30 $1,787,258 256,790
2025-06-30 $1,673,128 282,623
2025-03-31 $1,362,788 213,269
2024-12-31 $3,378,767 284,408
2024-09-30 $6,462,596 233,391
2024-06-30 $5,690,395 238,591
2024-03-31 $3,842,484 218,323
2023-12-31 $4,034,946 255,700
2023-09-30 $820,147 95,366
2023-06-30 $921,788 116,830
2023-03-31 $814,538 109,334
2022-12-31 $1,206,965 102,372
2022-09-30 $838,577 90,952
2022-06-30 $287,320 29,081
2022-03-31 $755,112 21,900
2021-12-31 $263,887 5,300
2021-09-30 $349,676 7,600