Jane Street
CMDB

Jane Street’s Costamare Bulkers Holdings CMDB Stock Holding History

Jane Street’s Portfolio CMDB Stock Details CMDB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$687K Buy
44,392
+7,000
+19% +$118K ﹤0.01% 7311
2025
Q4 		$576K Sell
37,392
-59,180
-61% -$857K ﹤0.01% 7372
2025
Q3 		$1.39M Buy
96,572
+32,739
+51% +$336K ﹤0.01% 5628
2025
Q2 		$553K Buy
+63,833
New +$635K ﹤0.01% 6726

Other funds holding CMDB

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
OIM
Oceanic Investment Management Douglas, Isle Of Man $118M AUM
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return
Walleye Capital
Walleye Capital New York $24B AUM 37.67% 1-Year Est. Return

Jane Street's CMDB Position: Q1 2026 in Review

Jane Street increased its Costamare Bulkers Holdings (CMDB) stake by 19% in Q1 2026, buying an estimated $118K and bringing the position to 44,392 shares worth $687K. The position accounts for ﹤0.01% of the portfolio, ranked #7311.

Jane Street first reported a position in CMDB in Q2 2025 and has held it in 4 quarters since. The position peaked at $1.39M in Q3 2025. 97 funds tracked by Wall St. Rank hold CMDB as of Q1 2026.

  • Jane Street held 44,392 shares of Costamare Bulkers Holdings worth $687K as of Q1 2026.
  • Jane Street bought 7,000 Costamare Bulkers Holdings shares in Q1 2026, an estimated $118K.
  • Costamare Bulkers Holdings made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #7311 holding.
  • Jane Street first reported a position in Costamare Bulkers Holdings in Q2 2025 and has held it in 4 quarters since.
  • Jane Street's Costamare Bulkers Holdings position peaked at $1.39M in Q3 2025.
  • 97 funds tracked by Wall St. Rank held Costamare Bulkers Holdings as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.