Essex Investment Management’s Aspen Aerogels ASPN Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | – | Sell |
-390,033
| Closed | -$2.71M | – | 309 |
|
|
2025
Q3 | $2.71M | Sell |
390,033
-36,495
| -9% | -$257K | 0.42% | 98 |
|
|
2025
Q2 | $2.53M | Buy |
426,528
+193,788
| +83% | +$1.11M | 0.46% | 90 |
|
|
2025
Q1 | $1.49M | Sell |
232,740
-15,503
| -6% | -$149K | 0.31% | 128 |
|
|
2024
Q4 | $2.95M | Buy |
248,243
+32,476
| +15% | +$554K | 0.53% | 76 |
|
|
2024
Q3 | $5.97M | Sell |
215,767
-79,349
| -27% | -$1.99M | 1.04% | 22 |
|
|
2024
Q2 | $7.04M | Sell |
295,116
-90,339
| -23% | -$2.12M | 1.32% | 9 |
|
|
2024
Q1 | $6.78M | Sell |
385,455
-47,695
| -11% | -$703K | 1.34% | 12 |
|
|
2023
Q4 | $6.84M | Sell |
433,150
-161,987
| -27% | -$1.67M | 1.35% | 11 |
|
|
2023
Q3 | $5.12M | Sell |
595,137
-416,334
| -41% | -$2.96M | 0.84% | 23 |
|
|
2023
Q2 | $7.98M | Buy |
1,011,471
+300,464
| +42% | +$2.09M | 1.11% | 13 |
|
|
2023
Q1 | $5.3M | Buy |
711,007
+16,378
| +2% | +$163K | 0.77% | 31 |
|
|
2022
Q4 | $8.19M | Buy |
694,629
+65,821
| +10% | +$752K | 1.28% | 10 |
|
|
2022
Q3 | $5.8M | Buy |
628,808
+78,328
| +14% | +$949K | 0.93% | 23 |
|
|
2022
Q2 | $5.44M | Buy |
550,480
+39,992
| +8% | +$807K | 0.88% | 23 |
|
|
2022
Q1 | $17.6M | Buy |
510,488
+133,618
| +35% | +$4.34M | 2.19% | 3 |
|
|
2021
Q4 | $18.8M | Sell |
376,870
-102,175
| -21% | -$5.38M | 2.15% | 4 |
|
|
2021
Q3 | $22M | Sell |
479,045
-85,562
| -15% | -$3.39M | 2.7% | 1 |
|
|
2021
Q2 | $16.9M | Buy |
564,607
+24,154
| +4% | +$493K | 1.96% | 2 |
|
|
2021
Q1 | $11M | Sell |
540,453
-44,695
| -8% | -$943K | 1.34% | 6 |
|
|
2020
Q4 | $9.77M | Sell |
585,148
-99,603
| -15% | -$1.31M | 1.21% | 6 |
|
|
2020
Q3 | $7.5M | Buy |
684,751
+306,451
| +81% | +$2.42M | 1.07% | 12 |
|
|
2020
Q2 | $2.49M | Sell |
378,300
-1,680
| -0.4% | -$10.8K | 0.41% | 72 |
|
|
2020
Q1 | $2.33M | Sell |
379,980
-57,278
| -13% | -$465K | 0.47% | 55 |
|
|
2019
Q4 | $3.39M | Buy |
437,258
+20,567
| +5% | +$142K | 0.42% | 65 |
|
|
2019
Q3 | $2.47M | Sell |
416,691
-47,473
| -10% | -$302K | 0.36% | 77 |
|
|
2019
Q2 | $3.31M | Buy |
464,164
+67,212
| +17% | +$305K | 0.45% | 50 |
|
|
2019
Q1 | $1.01M | Buy |
396,952
+45,005
| +13% | +$134K | 0.15% | 204 |
|
|
2018
Q4 | $750K | Buy |
351,947
+7,637
| +2% | +$25.9K | 0.12% | 227 |
|
|
2018
Q3 | $1.57M | Buy |
344,310
+53,188
| +18% | +$259K | 0.18% | 167 |
|
|
2018
Q2 | $1.43M | Buy |
291,122
+351
| +0.1% | +$1.67K | 0.18% | 175 |
|
|
2018
Q1 | $1.24M | Sell |
290,771
-21,266
| -7% | -$101K | 0.16% | 180 |
|
|
2017
Q4 | $1.52M | Buy |
312,037
+122,757
| +65% | +$572K | 0.2% | 158 |
|
|
2017
Q3 | $823K | Buy |
+189,280
| New | +$827K | 0.11% | 225 |
|
Other funds holding ASPN
KL
OCMI
NIM
GKFF
Essex Investment Management's ASPN Position: Q4 2025 in Review
Essex Investment Management sold out of Aspen Aerogels (ASPN) in Q4 2025, closing a stake of 390,033 shares — an estimated $2.71M sold.
Essex Investment Management first reported a position in ASPN in Q3 2017 and held it in 33 quarters. The position peaked at $22M in Q3 2021. 183 funds tracked by Wall St. Rank hold ASPN as of Q4 2025.
- Essex Investment Management reported no remaining Aspen Aerogels position as of Q4 2025 after selling out during the quarter.
- Essex Investment Management sold 390,033 Aspen Aerogels shares in Q4 2025, an estimated $2.71M.
- Essex Investment Management first reported a position in Aspen Aerogels in Q3 2017 and held it in 33 quarters.
- Essex Investment Management's Aspen Aerogels position peaked at $22M in Q3 2021.
- 183 funds tracked by Wall St. Rank held Aspen Aerogels as of Q4 2025.
Based on Essex Investment Management's 13F filing for Q4 2025, filed 13 Feb 2026.