OPPENHEIMER & CO INC ASPN — ASPEN AEROGELS INC

Ownership history in OPPENHEIMER & CO INC  ·  9 quarters on record

AI Ownership Summary

OPPENHEIMER & CO INC reported ASPEN AEROGELS INC (ASPN) in 9 quarterly 13F filings from 2024 Q1 through 2026 Q1. Peak portfolio weight reached 0.04% in 2024 Q3. The latest visible filing shows ASPN at 0.00% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings.

What this ASPN ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was OPPENHEIMER & CO INC's position in ASPEN AEROGELS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

ASPN was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.04% in 2024 Q3

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q1 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ASPN stock page OPPENHEIMER & CO INC fund profile OPPENHEIMER & CO INC full holdings
How OPPENHEIMER & CO INC held ASPN — position size vs. price
% of Fund (quarterly)    ASPN price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 REDUCED — — — 76,284 -737 -1.0% 0.00% $261K 2026-04-24 $3.50
2025 Q4 REDUCED 36.8% +20.9% ❌ 77,021 -44,805 -36.8% 0.00% $218K 2026-02-02 $3.25
2025 Q3 ADDED — — — 121,826 +102,047 +515.9% 0.01% $848K 2025-11-06 $4.11
2025 Q2 REDUCED 90.3% +19.6% ❌ 19,779 -183,381 -90.3% 0.00% $117K 2025-07-31 $7.66
2025 Q1 ADDED — — — 203,160 +21,632 +11.9% 0.02% $1.3M 2025-04-23 $5.23
2024 Q4 ADDED — — — 181,528 +78,993 +77.0% 0.03% $2.2M 2025-02-05 $11.28
2024 Q3 ADDED — — — 102,535 +64,154 +167.2% 0.04% $2.8M 2024-11-05 $18.51
2024 Q2 ADDED — — — 38,381 +16,326 +74.0% 0.01% $915K 2024-08-08 $21.46
2024 Q1 INITIATED — — — 22,055 — — 0.01% $388K 2024-05-07 $26.27

🏢 Other funds also holding ASPN

As of 2026 Q1 — sorted by position size

GAGNON SECURITIES LLC 3Y 7Y 1.47% Marex Group plc 0.05% Inspire Investing, LLC 3Y 7Y 0.04% Clarus Group, Inc. 3Y 0.01% First PREMIER Bank 3Y 7Y 0.0% Concurrent Investment Advisors, LLC 0.0% IFP Advisors, Inc 3Y 7Y 0.0% Banque Cantonale Vaudoise 3Y 0.0% Stone House Investment Management, LLC 3Y 7Y 0.0% Sterling Capital Management LLC 3Y 7Y 0.0%

FAQ About OPPENHEIMER & CO INC and ASPN

These are the practical questions this page is built to answer before you even open the full history table.

How long has OPPENHEIMER & CO INC reported owning ASPN?

OPPENHEIMER & CO INC reported ASPN across 9 quarterly 13F filings, from 2024 Q1 through 2026 Q1.

What was the largest reported ASPN position in OPPENHEIMER & CO INC's portfolio?

The largest reported portfolio weight for ASPN was 0.04% in 2024 Q3.

What is the latest reported ASPN position on this page?

The most recent filing on this page is 2026 Q1, when OPPENHEIMER & CO INC reported 76,284 shares, equal to 0.00% of portfolio, with an estimated market value of $261K.

What does the chart on this ASPN ownership page compare?

The chart compares OPPENHEIMER & CO INC's quarterly ASPN portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did OPPENHEIMER & CO INC time their ASPN position?

Based on 13F filing dates vs. subsequent ASPN price moves, OPPENHEIMER & CO INC correctly timed 2 out of 8 reported position changes (25%). The annualised alpha on ASPN relative to SPY over the holding period was -87.6%.

← Back to OPPENHEIMER & CO INC Holdings