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
Q1 		$393K Buy
114,800
+2,900
+3% +$9.78K ﹤0.01% 8595
2025
Q4 		$317K Buy
111,900
+47,400
+73% +$244K ﹤0.01% 8712
2025
Q3 		$449K Sell
64,500
-7,500
-10% -$52.9K ﹤0.01% 8088
2025
Q2 		$426K Sell
72,000
-64,300
-47% -$370K ﹤0.01% 7230
2025
Q1 		$871K Sell
136,300
-282,500
-67% -$2.72M ﹤0.01% 5826
2024
Q4 		$4.98M Buy
418,800
+264,600
+172% +$4.51M ﹤0.01% 2666
2024
Q3 		$4.27M Sell
154,200
-492,600
-76% -$12.3M ﹤0.01% 3114
2024
Q2 		$15.4M Buy
646,800
+105,100
+19% +$2.47M ﹤0.01% 1550
2024
Q1 		$9.53M Buy
541,700
+522,100
+2,664% +$7.69M ﹤0.01% 1867
2023
Q4 		$309K Buy
+19,600
New +$202K ﹤0.01% 7555
2023
Q3 		– Sell
-14,300
Closed -$113K – 8586
2023
Q2 		$113K Buy
14,300
+3,600
+34% +$25.1K ﹤0.01% 7951
2023
Q1 		$79.7K Sell
10,700
-3,200
-23% -$31.8K ﹤0.01% 8322
2022
Q4 		$164K Sell
13,900
-3,300
-19% -$37.7K ﹤0.01% 7811
2022
Q3 		$159K Sell
17,200
-32,000
-65% -$388K ﹤0.01% 8355
2022
Q2 		$486K Buy
49,200
+28,700
+140% +$579K ﹤0.01% 6793
2022
Q1 		$707K Hold
20,500
– – ﹤0.01% 6829
2021
Q4 		$1.02M Sell
20,500
-492,300
-96% -$25.9M ﹤0.01% 5854
2021
Q3 		$23.6M Buy
512,800
+5,500
+1% +$218K 0.01% 1028
2021
Q2 		$15.2M Buy
+507,300
New +$10.4M 0.01% 1316

Other funds holding ASPN

KL
KIM LLC Wichita, Kansas $976M AUM 0.91% 1-Year Est. Return
OCMI
Oaktop Capital Management II Chatham, New Jersey $1.34B AUM 114.5% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
NIM
Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
GKFF
George Kaiser Family Foundation Tulsa, Oklahoma $883M AUM 21.04% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
GS
Gagnon Securities New York $433M AUM 29.08% 1-Year Est. Return
RHJA
Rice Hall James & Associates San Diego, California $1.8B AUM 36.16% 1-Year Est. Return

Jane Street's ASPN Position: Q1 2026 in Review

Jane Street reduced its Aspen Aerogels (ASPN) stake by 36% in Q1 2026, selling an estimated $355K and leaving 187,860 shares worth $642K. The position accounts for ﹤0.01% of the portfolio, ranked #7458.

Jane Street first reported a position in ASPN in Q3 2015 and has held it in 21 quarters since. The position peaked at $8.49M in Q2 2024. 166 funds tracked by Wall St. Rank hold ASPN as of Q1 2026.

  • Jane Street held 187,860 shares of Aspen Aerogels worth $642K as of Q1 2026.
  • Jane Street sold 105,290 Aspen Aerogels shares in Q1 2026, an estimated $355K.
  • Aspen Aerogels made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #7458 holding.
  • Jane Street first reported a position in Aspen Aerogels in Q3 2015 and has held it in 21 quarters since.
  • Jane Street's Aspen Aerogels position peaked at $8.49M in Q2 2024.
  • 166 funds tracked by Wall St. Rank held Aspen Aerogels as of Q1 2026.

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