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 		$642K Sell
187,860
-105,290
-36% -$355K ﹤0.01% 7458
2025
Q4 		$830K Buy
293,150
+132,025
+82% +$681K ﹤0.01% 6535
2025
Q3 		$1.12M Buy
161,125
+76,245
+90% +$538K ﹤0.01% 6078
2025
Q2 		$502K Buy
84,880
+70,725
+500% +$407K ﹤0.01% 6916
2025
Q1 		$90.5K Sell
14,155
-71,307
-83% -$687K ﹤0.01% 8854
2024
Q4 		$1.02M Buy
85,462
+32,975
+63% +$562K ﹤0.01% 5363
2024
Q3 		$1.45M Sell
52,487
-303,496
-85% -$7.59M ﹤0.01% 5113
2024
Q2 		$8.49M Buy
355,983
+140,919
+66% +$3.31M ﹤0.01% 2229
2024
Q1 		$3.79M Buy
215,064
+40,233
+23% +$593K ﹤0.01% 3038
2023
Q4 		$2.76M Buy
+174,831
New +$1.81M ﹤0.01% 3779
2023
Q3 		– Sell
-49,135
Closed -$388K – 8587
2023
Q2 		$388K Buy
49,135
+33,957
+224% +$236K ﹤0.01% 6707
2023
Q1 		$113K Sell
15,178
-6,274
-29% -$62.4K ﹤0.01% 8163
2022
Q4 		$253K Buy
+21,452
New +$245K ﹤0.01% 7306
2022
Q3 		– Sell
-24,564
Closed -$297K – 9657
2022
Q2 		$243K Sell
24,564
-45,937
-65% -$927K ﹤0.01% 7918
2022
Q1 		$2.43M Buy
70,501
+57,204
+430% +$1.86M ﹤0.01% 4362
2021
Q4 		$662K Sell
13,297
-19,659
-60% -$1.04M ﹤0.01% 6742
2021
Q3 		$1.52M Buy
32,956
+22,253
+208% +$882K ﹤0.01% 5040
2021
Q2 		$321K Buy
+10,703
New +$218K ﹤0.01% 8029
2020
Q3 		– Sell
-35,075
Closed -$231K – 7116
2020
Q2 		$231K Buy
35,075
+14,760
+73% +$94.7K ﹤0.01% 6189
2020
Q1 		$125K Buy
+20,315
New +$165K ﹤0.01% 4852
2015
Q4 		– Sell
-41,020
Closed -$308K – 3964
2015
Q3 		$308K Buy
+41,020
New +$299K ﹤0.01% 2768

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.