Jane Street
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Jane Street’s MBIA MBI Stock Holding History

Jane Street’s Portfolio MBI Stock Details MBI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$204K Sell
31,300
-11,600
-27% -$69.9K ﹤0.01% 10091
2026
Q1 		$254K Buy
42,900
+600
+1% +$3.82K ﹤0.01% 9596
2025
Q4 		$303K Sell
42,300
-33,200
-44% -$240K ﹤0.01% 8817
2025
Q3 		$562K Buy
+75,500
New +$479K ﹤0.01% 7606
2024
Q2 		– Sell
-48,600
Closed -$329K – 9859
2024
Q1 		$329K Sell
48,600
-17,100
-26% -$108K ﹤0.01% 7411
2023
Q4 		$402K Buy
+65,700
New +$528K ﹤0.01% 7146
2023
Q3 		– Sell
-52,500
Closed -$454K – 9072
2023
Q2 		$454K Buy
52,500
+26,900
+105% +$242K ﹤0.01% 6462
2023
Q1 		$237K Sell
25,600
-22,000
-46% -$263K ﹤0.01% 7571
2022
Q4 		$612K Sell
47,600
-130,800
-73% -$1.49M ﹤0.01% 5782
2022
Q3 		$1.64M Sell
178,400
-206,600
-54% -$2.45M ﹤0.01% 4543
2022
Q2 		$4.75M Sell
385,000
-375,500
-49% -$4.94M ﹤0.01% 2730
2022
Q1 		$11.7M Buy
760,500
+451,700
+146% +$6.65M ﹤0.01% 1789
2021
Q4 		$4.88M Buy
308,800
+62,100
+25% +$820K ﹤0.01% 2898
2021
Q3 		$3.17M Buy
246,700
+37,900
+18% +$438K ﹤0.01% 3555
2021
Q2 		$2.3M Sell
208,800
-14,400
-6% -$143K ﹤0.01% 4055
2021
Q1 		$2.15M Buy
+223,200
New +$1.73M ﹤0.01% 3878
2018
Q4 		– Sell
-57,400
Closed -$614K – 5394
2018
Q3 		$614K Sell
57,400
-335,000
-85% -$3.43M ﹤0.01% 3366
2018
Q2 		$3.55M Sell
392,400
-1,449,200
-79% -$13.1M 0.01% 1341
2018
Q1 		$17.1M Buy
1,841,600
+1,813,700
+6,501% +$14.6M 0.04% 339
2017
Q4 		$204K Buy
+27,900
New +$217K ﹤0.01% 4187
2017
Q3 		– Sell
-75,500
Closed -$712K – 4821
2017
Q2 		$712K Buy
+75,500
New +$642K ﹤0.01% 2582
2017
Q1 		– Sell
-20,600
Closed -$220K – 4472
2016
Q4 		$220K Buy
+20,600
New +$190K ﹤0.01% 3654
2015
Q3 		– Sell
-22,900
Closed -$138K – 3930
2015
Q2 		$138K Buy
+22,900
New +$207K ﹤0.01% 3356

Other funds holding MBI

KBG
Kahn Brothers Group New York $633M AUM 39.01% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
WHCM
Wolf Hill Capital Management Greenwich, Connecticut $1.2B AUM 137.35% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
V
ValueWorks New York $479M AUM 117.71% 1-Year Est. Return
HP
Hosking Partners London, United Kingdom $3.01B AUM 83.99% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Cerity Partners
Cerity Partners New York $82.7B AUM 28.53% 1-Year Est. Return
TG
TCW Group Los Angeles, California $14.9B AUM 46.29% 1-Year Est. Return

Jane Street's MBI Position: Q2 2026 in Review

Jane Street reduced its MBIA (MBI) stake by 69% in Q2 2026, selling an estimated $1.28M and leaving 96,934 shares worth $632K. The position accounts for ﹤0.01% of the portfolio, ranked #7485.

Jane Street first reported a position in MBI in Q2 2013 and has held it in 34 quarters since. The position peaked at $2.39M in Q3 2025. 129 funds tracked by Wall St. Rank hold MBI as of Q2 2026.

  • Jane Street held 96,934 shares of MBIA worth $632K as of Q2 2026.
  • Jane Street sold 212,802 MBIA shares in Q2 2026, an estimated $1.28M.
  • MBIA made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #7485 holding.
  • Jane Street first reported a position in MBIA in Q2 2013 and has held it in 34 quarters since.
  • Jane Street's MBIA position peaked at $2.39M in Q3 2025.
  • 129 funds tracked by Wall St. Rank held MBIA as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.