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ASPN

ASPEN AEROGELS, INC.
Latest close $5.336 of 27 marquee funds currently hold1 CUSIP mapped
Current holders
6
27 funds tracked
Ever held
7
Current + past
New this quarter
1
Exited this quarter
0

Marquee-fund ownership over time

Aug 9, 2024Feb 14, 2025Feb 12, 2026May 15, 2026
Now
6

This quarter's activity

New positions opened

Positions exited

None.

Current holders

Sorted by tenure (longest first)
FundEntry priceLatest closeReturn on entry
Citadel Advisors$24$5.33-77%
Two Sigma Investments$24$5.33-77%
D.E. Shaw re-entered$24$5.33-77%
AQR Capital Management re-entered$24$5.33-77%
Millennium Management$24$5.33-77%
Point72 Asset Management re-entered$8.63$5.33-38%

“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.

Past holders

Funds that exited at some point
FundEntry → ExitReturn
Renaissance Technologies→ $3.33-85%

Insider activity

Form 4 — officers, directors, 10%+ owners

Filed within two business days of each transaction by anyone with material insider status at ASPEN AEROGELS INC. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.

Filings · last 30d
5
Filings · last 90d
15
Total on file
418
Recent SEC buffer
Most recent
May 14, 2026

30d / 90d windows measured from May 14, 2026 — the most recent Form 4 on file — not from today.

Showing 15 of 418 recent Form 4 filings. Browse all on EDGAR ↗

Fundamentals

XBRL · ASPEN AEROGELS, INC.

Annual figures sourced directly from ASPEN AEROGELS, INC.'s 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.

Revenue
$271.1M
FY2025-40% YoY
Net income
-$389.55M
FY2025-500%+ YoY
EPS (diluted)
$-4.73
FY2025-500%+ YoY
Free cash flow(?)
-$4.58M
FY2025+89% YoY

Recent SEC filings

10-K · 10-Q · 8-K · 13D/G · proxy

The most recent material filings for ASPEN AEROGELS INC — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.

Trade history

Every open→close lifecycle across tracked funds
FundOpen dateClose dateOpen priceClose price / currentReturn
Point72 Asset ManagementQ2 2026open$5.60$5.33-5%
Point72 Asset ManagementQ4 2025Q1 2026$3.08$3.56+16%
D.E. ShawQ2 2025open$5.69$5.33-6%
AQR Capital ManagementQ2 2025open$5.69$5.33-6%
Point72 Asset ManagementQ1 2025Q2 2025$8.63$5.69-34%
Citadel AdvisorsQ3 2024open$24$5.33-77%
Two Sigma InvestmentsQ3 2024open$24$5.33-77%
D.E. ShawQ3 2024Q1 2025$24$8.63-63%
AQR Capital ManagementQ3 2024Q1 2025$24$8.63-63%
Millennium ManagementQ3 2024open$24$5.33-77%
Renaissance TechnologiesQ3 2024Q1 2026$22$3.33-85%
Caveats
  • Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
  • Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
  • “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
  • Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
  • Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.