Aspen Aerogels, Inc.
US ˙ NYSE ˙ US04523Y1055

SecurityASPN / Aspen Aerogels, Inc.
InstitutionIFP Advisors, Inc
Latest Disclosed Ownership8,897 shares
Latest Disclosed Value $ 30,428
IFP Advisors, Inc reports 21.20% decrease in ownership of ASPN / Aspen Aerogels, Inc.

On April 13, 2026 - IFP Advisors, Inc filed a 13F-HR form disclosing ownership of 8,897 shares of Aspen Aerogels, Inc. (US:ASPN) valued at $30,428 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 11,291 shares of Aspen Aerogels, Inc.. This represents a change in shares of -21.20% during the quarter. The current value of the position is $52,492 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-13 2026-03-31 13F ASPEN AEROGELS cs 04523Y105 8,897 -2,394 -21.20 30 -3.23 0.0006
2026-02-06 2025-12-31 13F ASPEN AEROGELS cs 04523Y105 11,291 -741 -6.16 32 -62.65 0.0007
2026-02-06 2025-09-30 13F/A-1 ASPEN AEROGELS cs 04523Y105 12,032 -8,717 -42.01 84 -31.97 0.0022
2025-12-02 2025-09-30 13F ASPEN AEROGELS cs 04523Y105 12,021 -8,728 84 0.0022
2025-07-24 2025-06-30 13F ASPEN AEROGELS cs 04523Y105 20,749 -5,967 -22.33 123 -28.24 0.0035
2025-05-05 2025-03-31 13F ASPEN AEROGELS cs 04523Y105 26,716 5,997 28.94 171 -30.89 0.0053
2025-02-04 2024-12-31 13F ASPEN AEROGELS cs 04523Y105 20,719 20,424 6,923.39 246 2,975.00 0.0081
2025-02-04 2024-09-30 13F ASPEN AEROGELS cs 04523Y105 295 0 0.00 8 14.29 0.0003
2024-07-30 2024-06-30 13F ASPEN AEROGELS cs 04523Y105 295 0 0.00 7 40.00 0.0003
2024-07-30 2024-03-31 13F ASPEN AEROGELS cs 04523Y105 295 0 0.00 5 25.00 0.0002
2024-01-09 2023-12-31 13F ASPEN AEROGELS cs 04523Y105 295 -200 -40.40 5 0.00 0.0002
2023-10-12 2023-09-30 13F ASPEN AEROGELS cs 04523Y105 495 0 0.00 4 33.33 0.0002
2023-08-14 2023-06-30 13F/A-1 ASPEN AEROGELS cs 04523Y105 495 0 0.00 4 50.00 0.0002
2023-08-04 2023-06-30 13F ASPEN AEROGELS cs 04523Y105 495 0 2 0.0001
2023-04-18 2023-03-31 13F ASPEN AEROGELS cs 04523Y105 495 0 0.00 2 0.0001
2023-02-07 2022-12-31 13F ASPEN AEROGELS cs 04523Y105 495 295 147.50 0 -100.00 0.0001
2022-11-08 2022-09-30 13F ASPEN AEROGELS cs 04523Y105 200 200 1 0.0000
2021-07-13 2021-06-30 13F ASPEN AEROGELS INC COM Stock 04523Y105 0 -800 -100.00 0 -100.00
2021-04-30 2021-03-31 13F ASPEN AEROGELS INC COM Stock 04523Y105 800 800 16 0.0003
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.