Magnetar Financial
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Magnetar Financial’s Jackson Acquisition Co II JACS Stock Holding History

Magnetar Financial’s Portfolio JACS Stock Details JACS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$6.38M Hold
600,000
– – 0.06% 238
2026
Q1 		$6.33M Hold
600,000
– – 0.06% 197
2025
Q4 		$6.25M Hold
600,000
– – 0.06% 165
2025
Q3 		$6.23M Hold
600,000
– – 0.04% 196
2025
Q2 		$6.18M Buy
+600,000
New +$6.11M 0.03% 212

Other funds holding JACS

Hudson Bay Capital Management
Hudson Bay Capital Management Stamford, Connecticut $36.8B AUM 42.13% 1-Year Est. Return
Glazer Capital LLC
Glazer Capital LLC New York $4.07B AUM 78.71% 1-Year Est. Return
WCMNY
Westchester Capital Management (New York) Valhalla, New York $2.04B AUM 31.03% 1-Year Est. Return
AQR Arbitrage
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
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Wolverine Asset Management
Wolverine Asset Management Chicago, Illinois $11.4B AUM 5.65% 1-Year Est. Return
Polar Asset Management Partners
Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return
WRBC
W.R. Berkley Corp Greenwich, Connecticut $2.18B AUM 13.58% 1-Year Est. Return
Mizuho Securities USA
Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return

Magnetar Financial's JACS Position: Q2 2026 in Review

Magnetar Financial held its Jackson Acquisition Co II (JACS) position steady in Q2 2026 at 600,000 shares worth $6.38M. The position accounts for 0.06% of the portfolio, ranked #238.

Magnetar Financial first reported a position in JACS in Q2 2025 and has held it in 5 quarters since. 48 funds tracked by Wall St. Rank hold JACS as of Q2 2026.

  • Magnetar Financial held 600,000 shares of Jackson Acquisition Co II worth $6.38M as of Q2 2026.
  • Magnetar Financial left its Jackson Acquisition Co II share count unchanged in Q2 2026.
  • Jackson Acquisition Co II made up 0.06% of Magnetar Financial's portfolio in Q2 2026, its #238 holding.
  • Magnetar Financial first reported a position in Jackson Acquisition Co II in Q2 2025 and has held it in 5 quarters since.
  • 48 funds tracked by Wall St. Rank held Jackson Acquisition Co II as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.