Jane Street
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Jane Street’s Main Street Capital MAIN Stock Holding History

Jane Street’s Portfolio MAIN Stock Details MAIN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.56M Buy
68,600
+61,400
+853% +$3.24M ﹤0.01% 4224
2026
Q1 		$381K Sell
7,200
-6,500
-47% -$385K ﹤0.01% 8663
2025
Q4 		$827K Buy
13,700
+800
+6% +$47.2K ﹤0.01% 6546
2025
Q3 		$820K Buy
12,900
+2,600
+25% +$168K ﹤0.01% 6748
2025
Q2 		$609K Sell
10,300
-3,200
-24% -$177K ﹤0.01% 6559
2025
Q1 		$764K Buy
+13,500
New +$803K ﹤0.01% 6065
2024
Q4 		– Sell
-9,600
Closed -$481K – 10081
2024
Q3 		$481K Sell
9,600
-10,400
-52% -$520K ﹤0.01% 7248
2024
Q2 		$1.01M Buy
+20,000
New +$976K ﹤0.01% 5751
2023
Q4 		– Sell
-10,700
Closed -$435K – 9550
2023
Q3 		$435K Buy
10,700
+2,800
+35% +$114K ﹤0.01% 6498
2023
Q2 		$316K Sell
7,900
-8,100
-51% -$321K ﹤0.01% 7042
2023
Q1 		$631K Buy
16,000
+4,200
+36% +$166K ﹤0.01% 5912
2022
Q4 		$436K Sell
11,800
-9,600
-45% -$351K ﹤0.01% 6376
2022
Q3 		$720K Sell
21,400
-7,700
-26% -$317K ﹤0.01% 6017
2022
Q2 		$1.12M Buy
29,100
+13,600
+88% +$532K ﹤0.01% 5278
2022
Q1 		$661K Sell
15,500
-7,400
-32% -$317K ﹤0.01% 6965
2021
Q4 		$1.03M Buy
22,900
+8,900
+64% +$391K ﹤0.01% 5849
2021
Q3 		$575K Sell
14,000
-8,700
-38% -$362K ﹤0.01% 7023
2021
Q2 		$933K Sell
22,700
-18,700
-45% -$777K ﹤0.01% 5986
2021
Q1 		$1.62M Buy
41,400
+24,900
+151% +$874K ﹤0.01% 4429
2020
Q4 		$532K Sell
16,500
-7,800
-32% -$240K ﹤0.01% 5636
2020
Q3 		$719K Buy
24,300
+14,500
+148% +$444K ﹤0.01% 4618
2020
Q2 		$305K Buy
+9,800
New +$276K ﹤0.01% 5809

Other funds holding MAIN

T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Legal & General Group
Legal & General Group London, United Kingdom $480B AUM 42.84% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
AHC
Adell Harriman & Carpenter Houston, Texas $1.95B AUM 52.72% 1-Year Est. Return
MC
Muzinich & Co New York $293M AUM 18.57% 1-Year Est. Return
UBP
Union Bancaire Privee Geneva 1, Switzerland $9.16B AUM 31.4% 1-Year Est. Return

Jane Street's MAIN Position: Q2 2026 in Review

Jane Street opened a new position in Main Street Capital (MAIN) in Q2 2026: 105,352 shares worth $5.47M. The stake represents ﹤0.01% of the portfolio and ranks #3582 among its holdings. This is a return to the name: Jane Street previously reported a position in MAIN as recently as Q4 2025.

Jane Street first reported a position in MAIN in Q3 2013 and has held it in 30 quarters since. The position peaked at $19M in Q4 2025. 401 funds tracked by Wall St. Rank hold MAIN as of Q2 2026.

  • Jane Street held 105,352 shares of Main Street Capital worth $5.47M as of Q2 2026.
  • Main Street Capital was a new Jane Street position in Q2 2026.
  • Main Street Capital made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3582 holding.
  • Jane Street first reported a position in Main Street Capital in Q3 2013 and has held it in 30 quarters since.
  • Jane Street's Main Street Capital position peaked at $19M in Q4 2025.
  • 401 funds tracked by Wall St. Rank held Main Street Capital as of Q2 2026.

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