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RHUMBLINE ADVISERS

Position in ASPI — ASP Isotopes Inc.

CIK 1115418 BOSTON, MA

Position in ASPI

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$878,786
+$358,650 QoQ
Shares Held
141,284
+20.1% QoQ
Ownership
0.092%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#52
of 185 holders
Holding Since
Jun 2024
9 quarters on record
Voting authority Sole 21% Shared 0% None 79%

Common Shares in ASPI Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Jun 30, 2026

RHUMBLINE ADVISERS holds $1,282,066,450 across 52 Specialty Chemicals names. ASPI ranks #37 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ASPI

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9 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $878,786 141,284
2026-03-31 $520,136 117,678
2025-12-31 $543,222 101,537
2025-09-30 $984,000 102,287
2025-06-30 $581,395 78,994
2025-03-31 $306,378 65,326
2024-12-31 $273,444 60,363
2024-09-30 $99,243 35,699
2024-06-30 $116,451 38,056