Citigroup
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Citigroup’s Aspen Aerogels ASPN Stock Holding History

Citigroup’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 		$799K Sell
233,665
-4,966
-2% -$16.7K ﹤0.01% 3254
2025
Q4 		$675K Buy
238,631
+28,086
+13% +$145K ﹤0.01% 3395
2025
Q3 		$1.47M Sell
210,545
-92,272
-30% -$651K ﹤0.01% 2916
2025
Q2 		$1.79M Buy
302,817
+226,593
+297% +$1.3M ﹤0.01% 2739
2025
Q1 		$487K Sell
76,224
-11,335
-13% -$109K ﹤0.01% 3698
2024
Q4 		$1.04M Buy
87,559
+22,944
+36% +$391K ﹤0.01% 3336
2024
Q3 		$1.79M Buy
64,615
+48,524
+302% +$1.21M ﹤0.01% 2769
2024
Q2 		$384K Sell
16,091
-24,189
-60% -$568K ﹤0.01% 3552
2024
Q1 		$709K Buy
40,280
+28,831
+252% +$425K ﹤0.01% 3307
2023
Q4 		$181K Buy
11,449
+5,648
+97% +$58.3K ﹤0.01% 3954
2023
Q3 		$49.9K Sell
5,801
-17,103
-75% -$122K ﹤0.01% 4136
2023
Q2 		$181K Buy
22,904
+16,079
+236% +$112K ﹤0.01% 3936
2023
Q1 		$50.8K Sell
6,825
-428
-6% -$4.25K ﹤0.01% 4259
2022
Q4 		$85.5K Buy
7,253
+2,143
+42% +$24.5K ﹤0.01% 4083
2022
Q3 		$47K Sell
5,110
-17,514
-77% -$212K ﹤0.01% 4408
2022
Q2 		$223K Buy
22,624
+17,182
+316% +$347K ﹤0.01% 3793
2022
Q1 		$188K Sell
5,442
-4,776
-47% -$155K ﹤0.01% 4106
2021
Q4 		$509K Sell
10,218
-7,885
-44% -$416K ﹤0.01% 3778
2021
Q3 		$833K Sell
18,103
-358
-2% -$14.2K ﹤0.01% 3225
2021
Q2 		$552K Buy
18,461
+17,093
+1,249% +$349K ﹤0.01% 3637
2021
Q1 		$28K Sell
1,368
-2,511
-65% -$53K ﹤0.01% 5044
2020
Q4 		$65K Buy
3,879
+2,896
+295% +$38.1K ﹤0.01% 5852
2020
Q3 		$11K Sell
983
-1,701
-63% -$13.5K ﹤0.01% 6537
2020
Q2 		$18K Sell
2,684
-1,047
-28% -$6.72K ﹤0.01% 6680
2020
Q1 		$23K Buy
3,731
+3,231
+646% +$26.2K ﹤0.01% 6592
2019
Q4 		$4K Buy
+500
New +$3.45K ﹤0.01% 7440
2016
Q2 		– Sell
-61
Closed – – 7063
2016
Q1 		$0 Buy
+61
New +$277 ﹤0.01% 7441
2015
Q4 		– Sell
-825
Closed -$6K – 7532
2015
Q3 		$6K Sell
825
-35
-4% -$255 ﹤0.01% 6636
2015
Q2 		$5K Sell
860
-269
-24% -$1.84K ﹤0.01% 6731
2015
Q1 		$9K Sell
1,129
-669
-37% -$5.07K ﹤0.01% 6494
2014
Q4 		$15K Buy
1,798
+1,602
+817% +$13.6K ﹤0.01% 6326
2014
Q3 		$2K Buy
196
+191
+3,820% +$1.93K ﹤0.01% 6782
2014
Q2 		$0 Buy
+5
New +$54 ﹤0.01% 7097

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

Citigroup's ASPN Position: Q1 2026 in Review

Citigroup reduced its Aspen Aerogels (ASPN) stake by 2.1% in Q1 2026, selling an estimated $16.7K and leaving 233,665 shares worth $799K. The position accounts for ﹤0.01% of the portfolio, ranked #3254.

Citigroup first reported a position in ASPN in Q2 2014 and has held it in 33 quarters since. The position peaked at $1.79M in Q2 2025. 166 funds tracked by Wall St. Rank hold ASPN as of Q1 2026.

  • Citigroup held 233,665 shares of Aspen Aerogels worth $799K as of Q1 2026.
  • Citigroup sold 4,966 Aspen Aerogels shares in Q1 2026, an estimated $16.7K.
  • Aspen Aerogels made up ﹤0.01% of Citigroup's portfolio in Q1 2026, its #3254 holding.
  • Citigroup first reported a position in Aspen Aerogels in Q2 2014 and has held it in 33 quarters since.
  • Citigroup's Aspen Aerogels position peaked at $1.79M in Q2 2025.
  • 166 funds tracked by Wall St. Rank held Aspen Aerogels as of Q1 2026.

Based on Citigroup's 13F filing for Q1 2026, filed 11 May 2026.