Imperial Petroleum Inc.
DE ˙ DB ˙ MHY3894J1872
42,12 € ↓ -0,56 (-1,32%)
2019-07-30
DEL PRIS
SecurityDE:AR2 / Imperial Petroleum Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership549,140 shares
Latest Disclosed Value $ 2,350,319
Renaissance Technologies Llc reports 134.33% increase in ownership of AR2 / Imperial Petroleum Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 549,140 shares of Imperial Petroleum Inc. (DE:AR2) valued at $2,350,319 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 234,344 shares of Imperial Petroleum Inc.. This represents a change in shares of 134.33% during the quarter. The current value of the position is $23,132,522 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)
2026-05-14 2026-03-31 13F IMPERIAL PETE COM NEW Y3894J187 549,140 314,796 134.33 2,350 177.12 0.0037
2026-02-12 2025-12-31 13F IMPERIAL PETE COM NEW Y3894J187 234,344 10,648 4.76 848 -20.67 0.0013
2025-11-13 2025-09-30 13F IMPERIAL PETE COM NEW Y3894J187 223,696 142,096 174.14 1,069 325.90 0.0014
2025-08-13 2025-06-30 13F IMPERIAL PETE COM NEW Y3894J187 81,600 7,900 10.72 251 39.44 0.0003
2025-05-14 2025-03-31 13F IMPERIAL PETE COM NEW Y3894J187 73,700 -92,800 -55.74 181 -64.07 0.0003
2025-02-13 2024-12-31 13F IMPERIAL PETE COM NEW Y3894J187 166,500 112,300 207.20 501 123.66 0.0007
2024-11-13 2024-09-30 13F IMPERIAL PETE COM NEW Y3894J187 54,200 15,600 40.41 225 50.34 0.0003
2024-08-09 2024-06-30 13F IMPERIAL PETE COM NEW Y3894J187 38,600 -31,800 -45.17 150 0.0003
2024-05-13 2024-03-31 13F IMPERIAL PETE COM NEW Y3894J187 70,400 7,600 12.10 0 0.0003
2024-02-13 2023-12-31 13F IMPERIAL PETE COM NEW Y3894J187 62,800 62,800 0 0.0003
2019-11-13 2019-09-30 13F ARRAY BIOPHARMA COM 04269X105 0 -1,344,652 -100.00 0 -100.00
2019-08-12 2019-06-30 13F ARRAY BIOPHARMA COM 04269X105 1,344,652 1,047,084 351.88 62,298 758.69 0.0548
2019-05-14 2019-03-31 13F ARRAY BIOPHARMA COM 04269X105 297,568 297,568 -77.87 7,255 -88.35 0.0066
2018-11-13 2018-09-30 13F ARRAY BIOPHARMA COM 04269X105 0 -540,352 -100.00 0 -100.00
2018-08-13 2018-06-30 13F/A-1 ARRAY BIOPHARMA COM 04269X105 540,352 67,400 14.25 9,067 17.46 0.0099
2018-08-13 2018-06-30 13F ARRAY BIOPHARMA COM 04269X105 472,952 7,719
2018-05-14 2018-03-31 13F ARRAY BIOPHARMA COM 04269X105 472,952 -239,719 -33.64 7,719 -15.38 0.0084
2018-02-13 2017-12-31 13F ARRAY BIOPHARMA COM 04269X105 712,671 712,671 50.69 9,122 18.18 0.0101
2017-11-13 2017-09-30 13F ARRAY BIOPHARMA COM 04269X105 0 -990,441 -100.00 0 -100.00
2017-08-11 2017-06-30 13F ARRAY BIOPHARMA COM 04269X105 990,441 990,441 8,290 0.0106
2017-02-13 2016-12-31 13F ARRAY BIOPHARMA COM 04269X105 0 -424,452 -100.00 0 -100.00
2016-11-14 2016-09-30 13F ARRAY BIOPHARMA COM 04269X105 424,452 407,000 2,332.11 2,865 4,520.97 0.0051
2016-08-12 2016-06-30 13F ARRAY BIOPHARMA COM 04269X105 17,452 -2,137,200 -99.19 62 -99.02 0.0001
2016-05-13 2016-03-31 13F ARRAY BIOPHARMA COM 04269X105 2,154,652 -1,055,742 -32.89 6,356 -53.09 0.0121
2016-02-11 2015-12-31 13F ARRAY BIOPHARMA COM 04269X105 3,210,394 2,280,966 245.42 13,548 219.68 0.0295
2015-11-12 2015-09-30 13F ARRAY BIOPHARMA COM 04269X105 929,428 117,433 14.46 4,238 -27.61 0.0101
2015-08-14 2015-06-30 13F ARRAY BIOPHARMA COM 04269X105 811,995 -242,657 -23.01 5,854 -24.69 0.0133
2015-05-13 2015-03-31 13F ARRAY BIOPHARMA COM 04269X105 1,054,652 1,054,652 29.88 7,773 32.78 0.0166
2015-02-13 2014-12-31 13F ARRAY BIOPHARMA COM 04269X105 0 -14,852 -100.00 0 -100.00
2014-11-12 2014-09-30 13F ARRAY BIOPHARMA COM 04269X105 14,852 -349,000 -95.92 53 -97.09 0.0001
2014-02-14 2013-12-31 13F ARRAY BIOPHARMA COM 04269X105 363,852 -222,900 -37.99 1,823 -50.05 0.0044
2013-11-13 2013-09-30 13F ARRAY BIOPHARMA COM 04269X105 586,752 586,752 3,650 0.0089
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.