Jim Simons
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Jim Simons’s MBIA MBI Stock Holding History

Jim Simons’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
Q1 		$2.42M Buy
409,892
+268,100
+189% +$1.71M ﹤0.01% 1800
2025
Q4 		$1.02M Buy
141,792
+81,792
+136% +$591K ﹤0.01% 2273
2025
Q3 		$447K Sell
60,000
-73,600
-55% -$467K ﹤0.01% 2848
2025
Q2 		$580K Buy
133,600
+54,500
+69% +$242K ﹤0.01% 2761
2025
Q1 		$394K Sell
79,100
-54,568
-41% -$338K ﹤0.01% 2830
2024
Q4 		$863K Sell
133,668
-266,610
-67% -$1.37M ﹤0.01% 2577
2024
Q3 		$1.43M Buy
400,278
+281,104
+236% +$1.16M ﹤0.01% 2234
2024
Q2 		$654K Buy
119,174
+96,600
+428% +$579K ﹤0.01% 2560
2024
Q1 		$153K Sell
22,574
-245,073
-92% -$1.55M ﹤0.01% 3286
2023
Q4 		$1.64M Buy
267,647
+159,088
+147% +$1.28M ﹤0.01% 2074
2023
Q3 		$783K Buy
108,559
+54,585
+101% +$454K ﹤0.01% 2462
2023
Q2 		$466K Sell
53,974
-76,400
-59% -$688K ﹤0.01% 2907
2023
Q1 		$1.21M Sell
130,374
-40,700
-24% -$486K ﹤0.01% 2350
2022
Q4 		$2.2M Buy
171,074
+89,700
+110% +$1.02M ﹤0.01% 2015
2022
Q3 		$749K Sell
81,374
-1,500
-2% -$17.8K ﹤0.01% 2670
2022
Q2 		$1.02M Sell
82,874
-11,000
-12% -$145K ﹤0.01% 2701
2022
Q1 		$1.45M Sell
93,874
-46,700
-33% -$688K ﹤0.01% 2467
2021
Q4 		$2.22M Buy
140,574
+43,400
+45% +$573K ﹤0.01% 2059
2021
Q3 		$1.25M Sell
97,174
-2,500
-3% -$28.9K ﹤0.01% 2428
2021
Q2 		$1.1M Sell
99,674
-27,800
-22% -$277K ﹤0.01% 2627
2021
Q1 		$1.23M Sell
127,474
-72,694
-36% -$563K ﹤0.01% 2518
2020
Q4 		$1.32M Sell
200,168
-58,724
-23% -$382K ﹤0.01% 2357
2020
Q3 		$1.57M Sell
258,892
-88,600
-25% -$654K ﹤0.01% 2269
2020
Q2 		$2.52M Sell
347,492
-438,300
-56% -$3.18M ﹤0.01% 2052
2020
Q1 		$5.61M Buy
785,792
+128,800
+20% +$1.09M 0.01% 1497
2019
Q4 		$6.11M Buy
656,992
+428,618
+188% +$4.08M ﹤0.01% 1735
2019
Q3 		$2.11M Buy
+228,374
New +$2.14M ﹤0.01% 2256
2017
Q4 		– Sell
-529,500
Closed -$4.61M – 3437
2017
Q3 		$4.61M Sell
529,500
-245,379
-32% -$2.46M 0.01% 1822
2017
Q2 		$7.31M Buy
774,879
+517,879
+202% +$4.4M 0.01% 1460
2017
Q1 		$2.18M Sell
257,000
-888,600
-78% -$8.94M ﹤0.01% 2192
2016
Q4 		$12.3M Buy
1,145,600
+1,023,600
+839% +$9.45M 0.02% 1091
2016
Q3 		$950K Buy
+122,000
New +$960K ﹤0.01% 2591
2015
Q1 		– Sell
-395,520
Closed -$3.77M – 3269
2014
Q4 		$3.77M Buy
395,520
+275,896
+231% +$2.66M 0.01% 1432
2014
Q3 		$1.1M Sell
119,624
-1,179,576
-91% -$11.6M ﹤0.01% 1984
2014
Q2 		$14.3M Buy
1,299,200
+734,362
+130% +$9.05M 0.03% 642
2014
Q1 		$7.9M Buy
+564,838
New +$7.2M 0.02% 1000
2013
Q4 		– Sell
-1,326,700
Closed -$13.6M – 2950
2013
Q3 		$13.6M Buy
1,326,700
+1,308,800
+7,312% +$16.5M 0.03% 645
2013
Q2 		$238K Buy
+17,900
New +$225K ﹤0.01% 2478

Other funds holding MBI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
WHCM
Wolf Hill Capital Management Greenwich, Connecticut $1.03B AUM 80.44% 1-Year Est. Return
KBG
Kahn Brothers Group New York $564M AUM 25.3% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
V
ValueWorks New York $367M AUM 59.38% 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 $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
TG
TCW Group Los Angeles, California $14.9B AUM 46.29% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Jim Simons's MBI Position: Q1 2026 in Review

Jim Simons increased its MBIA (MBI) stake by 189% in Q1 2026, buying an estimated $1.71M and bringing the position to 409,892 shares worth $2.42M. The position accounts for ﹤0.01% of the portfolio, ranked #1800.

Jim Simons first reported a position in MBI in Q2 2013 and has held it in 38 quarters since. The position peaked at $14.3M in Q2 2014. 134 funds tracked by Wall St. Rank hold MBI as of Q1 2026.

  • Jim Simons held 409,892 shares of MBIA worth $2.42M as of Q1 2026.
  • Jim Simons bought 268,100 MBIA shares in Q1 2026, an estimated $1.71M.
  • MBIA made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #1800 holding.
  • Jim Simons first reported a position in MBIA in Q2 2013 and has held it in 38 quarters since.
  • Jim Simons's MBIA position peaked at $14.3M in Q2 2014.
  • 134 funds tracked by Wall St. Rank held MBIA as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.