Jane Street
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Jane Street’s Aspen Aerogels ASPN Stock Holding History

Jane Street’s Portfolio ASPN Stock Details ASPN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$207K Buy
32,600
+12,800
+65% +$62.8K ﹤0.01% 10065
2026
Q1 		$67.7K Buy
+19,800
New +$66.7K ﹤0.01% 10842
2025
Q3 		– Sell
-10,000
Closed -$59.2K – 10734
2025
Q2 		$59.2K Sell
10,000
-5,300
-35% -$30.5K ﹤0.01% 9131
2025
Q1 		$97.8K Sell
15,300
-13,600
-47% -$131K ﹤0.01% 8819
2024
Q4 		$343K Buy
28,900
+15,000
+108% +$256K ﹤0.01% 7512
2024
Q3 		$385K Sell
13,900
-236,000
-94% -$5.9M ﹤0.01% 7638
2024
Q2 		$5.96M Buy
249,900
+16,900
+7% +$397K ﹤0.01% 2714
2024
Q1 		$4.1M Buy
233,000
+221,500
+1,926% +$3.26M ﹤0.01% 2928
2023
Q4 		$181K Buy
+11,500
New +$119K ﹤0.01% 8283
2023
Q3 		– Sell
-44,700
Closed -$353K – 8588
2023
Q2 		$353K Buy
+44,700
New +$311K ﹤0.01% 6874
2022
Q4 		– Sell
-14,400
Closed -$133K – 9094
2022
Q3 		$133K Buy
14,400
+2,900
+25% +$35.1K ﹤0.01% 8475
2022
Q2 		$114K Buy
+11,500
New +$232K ﹤0.01% 8563
2022
Q1 		– Sell
-13,000
Closed -$647K – 10241
2021
Q4 		$647K Buy
13,000
+6,900
+113% +$364K ﹤0.01% 6780
2021
Q3 		$281K Buy
+6,100
New +$242K ﹤0.01% 8318

Other funds holding ASPN

KL
KIM LLC Wichita, Kansas $1B AUM 29.68% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
OCMI
Oaktop Capital Management II Chatham, New Jersey $2.35B AUM 214.39% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
NIM
Needham Investment Management New York $3.33B AUM 163.16% 1-Year Est. Return
GKFF
George Kaiser Family Foundation Tulsa, Oklahoma $1.04B AUM 36.93% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

Jane Street's ASPN Position: Q2 2026 in Review

Jane Street sold out of Aspen Aerogels (ASPN) in Q2 2026, closing a stake of 187,860 shares — an estimated $921K sold.

Jane Street first reported a position in ASPN in Q3 2015 and held it in 21 quarters. The position peaked at $8.49M in Q2 2024. 179 funds tracked by Wall St. Rank hold ASPN as of Q2 2026.

  • Jane Street reported no remaining Aspen Aerogels position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 187,860 Aspen Aerogels shares in Q2 2026, an estimated $921K.
  • Jane Street first reported a position in Aspen Aerogels in Q3 2015 and held it in 21 quarters.
  • Jane Street's Aspen Aerogels position peaked at $8.49M in Q2 2024.
  • 179 funds tracked by Wall St. Rank held Aspen Aerogels as of Q2 2026.

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