Vanguard Group
ASPN icon

Vanguard Group’s Aspen Aerogels ASPN Stock Holding History

Vanguard Group’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
2025
Q4 		$13.3M Buy
4,685,950
+175,580
+4% +$905K ﹤0.01% 2818
2025
Q3 		$31.4M Buy
4,510,370
+22,686
+0.5% +$160K ﹤0.01% 2398
2025
Q2 		$26.6M Buy
4,487,684
+114,525
+3% +$659K ﹤0.01% 2425
2025
Q1 		$27.9M Buy
4,373,159
+12,913
+0.3% +$124K ﹤0.01% 2348
2024
Q4 		$51.8M Buy
4,360,246
+226,251
+5% +$3.86M ﹤0.01% 2144
2024
Q3 		$114M Buy
4,133,995
+118,603
+3% +$2.97M ﹤0.01% 1813
2024
Q2 		$95.8M Buy
4,015,392
+395,690
+11% +$9.29M ﹤0.01% 1854
2024
Q1 		$63.7M Buy
3,619,702
+175,906
+5% +$2.59M ﹤0.01% 2063
2023
Q4 		$54.3M Sell
3,443,796
-2,091
-0.1% -$21.6K ﹤0.01% 2156
2023
Q3 		$29.6M Buy
3,445,887
+14,013
+0.4% +$99.5K ﹤0.01% 2378
2023
Q2 		$27.1M Sell
3,431,874
-3,989
-0.1% -$27.8K ﹤0.01% 2460
2023
Q1 		$25.6M Buy
3,435,863
+274,413
+9% +$2.73M ﹤0.01% 2485
2022
Q4 		$37.3M Buy
3,161,450
+1,300,874
+70% +$14.9M ﹤0.01% 2329
2022
Q3 		$17.2M Buy
1,860,576
+419,657
+29% +$5.08M ﹤0.01% 2700
2022
Q2 		$14.2M Sell
1,440,919
-92,372
-6% -$1.86M ﹤0.01% 2808
2022
Q1 		$52.9M Sell
1,533,291
-22,999
-1% -$746K ﹤0.01% 2278
2021
Q4 		$77.5M Buy
1,556,290
+155,733
+11% +$8.21M ﹤0.01% 2120
2021
Q3 		$64.4M Buy
1,400,557
+96,094
+7% +$3.81M ﹤0.01% 2225
2021
Q2 		$39M Buy
1,304,463
+104,143
+9% +$2.13M ﹤0.01% 2497
2021
Q1 		$24.4M Buy
1,200,320
+31,461
+3% +$664K ﹤0.01% 2677
2020
Q4 		$19.5M Buy
1,168,859
+145,870
+14% +$1.92M ﹤0.01% 2645
2020
Q3 		$11.2M Sell
1,022,989
-144,396
-12% -$1.14M ﹤0.01% 2732
2020
Q2 		$7.68M Buy
1,167,385
+50,856
+5% +$326K ﹤0.01% 2892
2020
Q1 		$6.86M Buy
1,116,529
+223,540
+25% +$1.81M ﹤0.01% 2806
2019
Q4 		$6.93M Buy
892,989
+105,299
+13% +$727K ﹤0.01% 3036
2019
Q3 		$4.66M Buy
787,690
+111,176
+16% +$707K ﹤0.01% 3161
2019
Q2 		$4.82M Buy
676,514
+248,100
+58% +$1.13M ﹤0.01% 3181
2019
Q1 		$1.09M Buy
428,414
+145,300
+51% +$432K ﹤0.01% 3604
2018
Q4 		$603K Sell
283,114
-502,229
-64% -$1.7M ﹤0.01% 3691
2018
Q3 		$3.59M Buy
785,343
+2,500
+0.3% +$12.2K ﹤0.01% 3347
2018
Q2 		$3.84M Buy
782,843
+5,317
+0.7% +$25.2K ﹤0.01% 3293
2018
Q1 		$3.32M Buy
777,526
+194,984
+33% +$922K ﹤0.01% 3294
2017
Q4 		$2.84M Sell
582,542
-447
-0.1% -$2.08K ﹤0.01% 3313
2017
Q3 		$2.54M Buy
582,989
+300
+0.1% +$1.31K ﹤0.01% 3333
2017
Q2 		$2.59M Buy
582,689
+3,158
+0.5% +$13.3K ﹤0.01% 3303
2017
Q1 		$2.4M Buy
579,531
+13,784
+2% +$58.7K ﹤0.01% 3325
2016
Q4 		$2.34M Sell
565,747
-18,076
-3% -$88.1K ﹤0.01% 3315
2016
Q3 		$3.48M Buy
583,823
+17,728
+3% +$89.3K ﹤0.01% 3169
2016
Q2 		$2.81M Buy
566,095
+4,062
+0.7% +$17.8K ﹤0.01% 3236
2016
Q1 		$2.53M Buy
562,033
+266,728
+90% +$1.21M ﹤0.01% 3292
2015
Q4 		$1.79M Buy
295,305
+33,168
+13% +$230K ﹤0.01% 3434
2015
Q3 		$1.97M Buy
262,137
+17,166
+7% +$125K ﹤0.01% 3385
2015
Q2 		$1.62M Buy
244,971
+105,952
+76% +$725K ﹤0.01% 3502
2015
Q1 		$1.01M Buy
139,019
+12,180
+10% +$92.2K ﹤0.01% 3629
2014
Q4 		$1.01M Buy
126,839
+2,891
+2% +$24.5K ﹤0.01% 3528
2014
Q3 		$1.25M Sell
123,948
-1,952
-2% -$19.8K ﹤0.01% 3444
2014
Q2 		$1.39M Buy
+125,900
New +$1.37M ﹤0.01% 3391

Other funds holding ASPN

KL
KIM LLC Wichita, Kansas $976M AUM 0.91% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
OCMI
Oaktop Capital Management II Chatham, New Jersey $1.34B AUM 114.5% 1-Year Est. Return
NIM
Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Vanguard Group's ASPN Position: Q4 2025 in Review

Vanguard Group increased its Aspen Aerogels (ASPN) stake by 3.9% in Q4 2025, buying an estimated $905K and bringing the position to 4,685,950 shares worth $13.3M. The position accounts for ﹤0.01% of the portfolio, ranked #2818.

Vanguard Group first reported a position in ASPN in Q2 2014 and has held it in 47 quarters since. The position peaked at $114M in Q3 2024. 183 funds tracked by Wall St. Rank hold ASPN as of Q4 2025.

  • Vanguard Group held 4,685,950 shares of Aspen Aerogels worth $13.3M as of Q4 2025.
  • Vanguard Group bought 175,580 Aspen Aerogels shares in Q4 2025, an estimated $905K.
  • Aspen Aerogels made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #2818 holding.
  • Vanguard Group first reported a position in Aspen Aerogels in Q2 2014 and has held it in 47 quarters since.
  • Vanguard Group's Aspen Aerogels position peaked at $114M in Q3 2024.
  • 183 funds tracked by Wall St. Rank held Aspen Aerogels as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.