Imperial Petroleum Inc. (IMPP) Ownership

NASDAQ: IMPPTop holders, insider trades and short interest.

IMPP ownership summary

as of October 18, 2026
Institutions
31.8%
of shares outstanding
Insiders
31.87%
of shares outstanding
Shares outstanding
45.6M
Float
20.3M
shares available to trade
Short interest
10.91%
3.5M shares short
Days to cover
6.32
short interest up 0.2% vs prior month
  • Institutions 31.77%
  • Insiders 31.87%
  • Other investors 36.36%

IMPP top institutional holders

20 largest
Imperial Petroleum Inc. top institutional holders
#Holder% of sharesSharesValueChangeReported
1Acadian Asset Management LLC4.13%1.8M$8.9M—June 30, 2026
2Anson Funds Management LP3.55%1.6M$7.6M−5.4M (−77.2%)June 30, 2026
3Deuterium Capital Management, LLC1.78%790K$3.8M−36,754 (−4.4%)June 30, 2026
4Renaissance Technologies Corp1.45%647K$3.1M+97,405 (+17.7%)June 30, 2026
5Marshall Wace Asset Management Ltd1.42%630K$3.1M−176,124 (−21.8%)June 30, 2026
6Two Sigma Investments LLC1.17%519K$2.5M+412,217 (+386.6%)June 30, 2026
7BNP Paribas Arbitrage, SA1.16%516K$2.5M+391,746 (+314.1%)June 30, 2026
8Jane Street Group LLC1.11%492K$2.4M+318,525 (+183.6%)June 30, 2026
9Empowered Funds, LLC0.90%399K$1.9M+69,312 (+21.1%)June 30, 2026
10Millennium Management LLC0.85%380K$1.8M+262,045 (+221.8%)June 30, 2026
11JPMorgan Chase & Co0.77%340K$1.6M+287,692 (+546.5%)June 30, 2026
12Squarepoint Ops LLC0.76%336K$1.6M−20,476 (−5.7%)June 30, 2026
13Point72 Asset Management, L.P.0.70%311K$1.5M+54,780 (+21.4%)June 30, 2026
14Morgan Stanley - Brokerage Accounts0.69%308K$1.5M+165,335 (+115.8%)June 30, 2026
15Susquehanna International Group, LLP0.69%307K$1.5M−74,343 (−19.5%)June 30, 2026
16Winton Capital Group Ltd0.64%286K$1.4M+286,133 (0.0%)June 30, 2026
17Centiva Capital LP0.50%224K$1.1M+73,349 (+48.7%)June 30, 2026
18COMMONS CAPITAL, LLC0.50%223K$1.1M+151,624 (+213.6%)June 30, 2026
19UBS Group AG0.39%173K$835,679−34,744 (−16.8%)June 30, 2026
20GSA Capital Partners LLP0.35%154K$746,851+154,308 (0.0%)June 30, 2026

Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 2.7M shares and 6 cut 5.7M.

IMPP top mutual fund and ETF holders

7 largest
Imperial Petroleum Inc. top fund holders
#Holder% of sharesSharesValueChangeReported
1City Different Investments Glbl Eqty ETF1.04%464K$2.2M—September 30, 2026
2Ixios Special Situations I0.30%134K$646,498−22,708 (−14.5%)June 30, 2026
3Auer Growth0.17%75K$363,000—August 31, 2026
4Acuitas US Microcap Institutional0.13%57K$274,423+56,699 (0.0%)June 30, 2026
5Marsot Inversions SICAV SA0.06%26K$125,525—July 31, 2026
6Fidelity Nasdaq Composite Index0.04%17K$81,477−5,893 (−25.9%)August 31, 2026
7RAM (Lux) Sys Emg Mkts Equities B USD0.02%7,210$34,896+7,210 (0.0%)June 30, 2026

Funds report holdings monthly or quarterly; dates differ by fund.

IMPP shares outstanding

Shares outstanding

Year-end shares outstanding, adjusted for splits.

Who owns IMPP

Institutional investors own 31.8% of Imperial Petroleum's shares and insiders 31.87%. The largest holder is Acadian Asset Management LLC with 4.13% of the shares (1.8M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 6 reduced their stake in the latest filings. Short interest is 10.91% of the float, or 6.32 days of average trading volume. The share count rose 3,763.2% since 2007.

Related: IMPP analyst forecast, IMPP key metrics. See the IMPP stock overview for the latest quote and news.

IMPP ownership FAQ

Who owns the most Imperial Petroleum stock?

The largest shareholders of Imperial Petroleum are Acadian Asset Management LLC (4.13%), Anson Funds Management LP (3.55%), Deuterium Capital Management, LLC (1.78%), Renaissance Technologies Corp (1.45%), Marshall Wace Asset Management Ltd (1.42%).

What percentage of Imperial Petroleum is owned by institutions?

Institutions hold 31.8% of Imperial Petroleum's shares outstanding; insiders hold 31.87%.

Which funds own Imperial Petroleum?

The largest fund holders of Imperial Petroleum are City Different Investments Glbl Eqty ETF (1.04%), Ixios Special Situations I (0.30%), Auer Growth (0.17%), Acuitas US Microcap Institutional (0.13%), Marsot Inversions SICAV SA (0.06%).

What is Imperial Petroleum's short interest?

3.5M shares of Imperial Petroleum were sold short, 10.91% of the float; at the average daily volume it would take 6.32 days to cover.

How many shares of Imperial Petroleum are outstanding?

Imperial Petroleum has 45.6M shares outstanding, of which 20.3M are in the public float.

Oil & Gas Midstream: ownership