WRBC
QUMSR

W.R. Berkley Corp’s Quantumsphere Acquisition Corp Rights QUMSR Stock Holding History

W.R. Berkley Corp’s Portfolio QUMSR Stock Details QUMSR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.87K Sell
24,108
-11,002
-31% -$2.31K ﹤0.01% 342
2026
Q1 		$7.73K Hold
35,110
– – ﹤0.01% 338
2025
Q4 		$7.38K Buy
+35,110
New +$9.15K ﹤0.01% 278

Other funds holding QUMSR

HCI
Harraden Circle Investments New York $784M AUM 20.59% 1-Year Est. Return
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $86.4B AUM 59.51% 1-Year Est. Return
SCM
Shaolin Capital Management Miami, Florida $2.1B AUM 64.05% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.07B AUM 78.71% 1-Year Est. Return
RCM
Rivernorth Capital Management West Palm Beach, Florida $2.1B AUM 2.15% 1-Year Est. Return
AA
AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return
LA
Linden Advisors New York $19.3B AUM 1.47% 1-Year Est. Return
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return
HIM
HGC Investment Management Toronto, Ontario, Canada $507M AUM 6.15% 1-Year Est. Return
HCM
Highbridge Capital Management New York $4.11B AUM 26.03% 1-Year Est. Return

W.R. Berkley Corp's QUMSR Position: Q2 2026 in Review

W.R. Berkley Corp reduced its Quantumsphere Acquisition Corp Rights (QUMSR) stake by 31% in Q2 2026, selling an estimated $2.31K and leaving 24,108 shares worth $3.87K. The position accounts for ﹤0.01% of the portfolio, ranked #342.

W.R. Berkley Corp first reported a position in QUMSR in Q4 2025 and has held it in 3 quarters since. The position peaked at $7.73K in Q1 2026. 25 funds tracked by Wall St. Rank hold QUMSR as of Q2 2026.

  • W.R. Berkley Corp held 24,108 shares of Quantumsphere Acquisition Corp Rights worth $3.87K as of Q2 2026.
  • W.R. Berkley Corp sold 11,002 Quantumsphere Acquisition Corp Rights shares in Q2 2026, an estimated $2.31K.
  • Quantumsphere Acquisition Corp Rights made up ﹤0.01% of W.R. Berkley Corp's portfolio in Q2 2026, its #342 holding.
  • W.R. Berkley Corp first reported a position in Quantumsphere Acquisition Corp Rights in Q4 2025 and has held it in 3 quarters since.
  • W.R. Berkley Corp's Quantumsphere Acquisition Corp Rights position peaked at $7.73K in Q1 2026.
  • 25 funds tracked by Wall St. Rank held Quantumsphere Acquisition Corp Rights as of Q2 2026.

Based on W.R. Berkley Corp's 13F filing for Q2 2026, filed 14 Aug 2026.