SEC 13F Intelligence

GP-ACT III ACQUISITION CORP

CUSIP G4035N111

GP-Act III Acquisition Corp has 3 institutional holders in Filings Flow’s 13F database, together reporting 228.7K shares worth $203,110 as of Q1 2026. The largest reported holders are Clear Street Group Inc., Clear Street LLC, and Longfellow Investment Management Co LLC.

Institutional Holders
3
Q1 2026
Reported Value
$203,110
Ticker
unmapped
private placement or foreign
Quarters Tracked
2

Ownership Trend

Institutional holders
Q4 ’25: 2Q4 ’25Q1 ’26: 3Q1 ’26filingsflow.com
Total reported value
Q4 ’25: $199,464Q4 ’25Q1 ’26: $203,110Q1 ’26filingsflow.com

Holders

Mixed quarters
Manager% of PortfolioValueSharesQuarter
LONGFELLOW INVESTMENT MANAGEMENT CO LLC$480M AUM0.02%$83,1487.8KQ2 2025OLDER
Clear Street Group Inc.$24.6B AUM0.00%$160,43014.8KQ1 2026
CLEAR STREET LLC$25.1B AUM0.00%$157,33114.8KQ2 2025OLDER
UBS Group AG$666.3B AUM0.00%$42,6784.0KQ1 2026
First Trust Capital Management L.P.$1.9B AUM0.00%$2210.0KQ1 2026

Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.