Assenagon Asset Management
ASPN icon

Assenagon Asset Management’s Aspen Aerogels ASPN Stock Holding History

Assenagon Asset Management’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 		– Sell
-97,002
Closed -$275K – 1109
2025
Q4 		$275K Buy
+97,002
New +$500K ﹤0.01% 1098
2024
Q3 		– Sell
-244,512
Closed -$5.83M – 1364
2024
Q2 		$5.83M Buy
244,512
+208,398
+577% +$4.89M 0.01% 585
2024
Q1 		$636K Buy
+36,114
New +$532K ﹤0.01% 1155
2023
Q2 		– Sell
-429,352
Closed -$3.2M – 1331
2023
Q1 		$3.2M Buy
429,352
+125,513
+41% +$1.25M 0.01% 697
2022
Q4 		$3.58M Sell
303,839
-66,733
-18% -$763K 0.01% 621
2022
Q3 		$3.42M Buy
370,572
+177,677
+92% +$2.15M 0.01% 571
2022
Q2 		$1.91M Buy
192,895
+184,254
+2,132% +$3.72M 0.01% 854
2022
Q1 		$298K Sell
8,641
-15,100
-64% -$490K ﹤0.01% 1296
2021
Q4 		$1.18M Buy
23,741
+14,826
+166% +$781K ﹤0.01% 981
2021
Q3 		$410K Sell
8,915
-13,240
-60% -$525K ﹤0.01% 1092
2021
Q2 		$663K Buy
+22,155
New +$452K ﹤0.01% 988

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

Assenagon Asset Management's ASPN Position: Q1 2026 in Review

Assenagon Asset Management sold out of Aspen Aerogels (ASPN) in Q1 2026, closing a stake of 97,002 shares — an estimated $275K sold.

Assenagon Asset Management first reported a position in ASPN in Q2 2021 and held it in 11 quarters. The position peaked at $5.83M in Q2 2024. 166 funds tracked by Wall St. Rank hold ASPN as of Q1 2026.

  • Assenagon Asset Management reported no remaining Aspen Aerogels position as of Q1 2026 after selling out during the quarter.
  • Assenagon Asset Management sold 97,002 Aspen Aerogels shares in Q1 2026, an estimated $275K.
  • Assenagon Asset Management first reported a position in Aspen Aerogels in Q2 2021 and held it in 11 quarters.
  • Assenagon Asset Management's Aspen Aerogels position peaked at $5.83M in Q2 2024.
  • 166 funds tracked by Wall St. Rank held Aspen Aerogels as of Q1 2026.

Based on Assenagon Asset Management's 13F filing for Q1 2026, filed 20 Apr 2026.