Imperial Petroleum Inc.
DE ˙ DB ˙ MHY3894J1872
42,12 € ↓ -0,56 (-1,32%)
2019-07-30
DEL PRIS
SecurityDE:AR2 / Imperial Petroleum Inc.
InstitutionTwo Sigma Investments, Lp
ManagerJohn Overdeck, David Siegel
Latest Disclosed Ownership106,615 shares
Latest Disclosed Value $ 456,312
Two Sigma Investments, Lp reports 272.61% increase in ownership of AR2 / Imperial Petroleum Inc.

On May 15, 2026 - Two Sigma Investments, Lp filed a 13F-HR form disclosing ownership of 106,615 shares of Imperial Petroleum Inc. (DE:AR2) valued at $456,312 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,613 shares of Imperial Petroleum Inc.. This represents a change in shares of 272.61% during the quarter. The current value of the position is $4,491,157 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)
2026-05-15 2026-03-31 13F IMPERIAL PETE COM NEW Y3894J187 106,615 78,002 272.61 456 342.72 0.0004
2026-02-17 2025-12-31 13F IMPERIAL PETE COM NEW Y3894J187 28,613 9,810 52.17 104 15.73 0.0001
2025-11-14 2025-09-30 13F IMPERIAL PETE COM NEW Y3894J187 18,803 18,803 90 0.0001
2025-02-14 2024-12-31 13F IMPERIAL PETE COM NEW Y3894J187 0 -17,391 -100.00 0 -100.00
2024-11-14 2024-09-30 13F IMPERIAL PETE COM NEW Y3894J187 17,391 960 5.84 72 14.29 0.0002
2024-08-14 2024-06-30 13F IMPERIAL PETE COM NEW Y3894J187 16,431 -954 -5.49 64 16.67 0.0001
2024-05-15 2024-03-31 13F IMPERIAL PETE COM NEW Y3894J187 17,385 -57,246 -76.71 54 -72.59 0.0001
2024-02-14 2023-12-31 13F IMPERIAL PETE COM NEW Y3894J187 74,631 74,631 197 0.0005
2019-11-14 2019-09-30 13F ARRAY BIOPHARMA COM 04269X105 0 -578,782 -100.00 0 -100.00
2019-08-14 2019-06-30 13F ARRAY BIOPHARMA COM 04269X105 578,782 -607,657 -51.22 26,815 -7.29 0.0897
2019-05-15 2019-03-31 13F ARRAY BIOPHARMA COM 04269X105 1,186,439 1,186,439 28,925 0.0938
2018-08-14 2018-06-30 13F ARRAY BIOPHARMA COM 04269X105 0 -412,582 -100.00 0 -100.00
2018-05-15 2018-03-31 13F ARRAY BIOPHARMA COM 04269X105 412,582 -657,355 -61.44 6,733 -50.84 0.0224
2018-02-14 2017-12-31 13F ARRAY BIOPHARMA COM 04269X105 1,069,937 -1,143,781 -51.67 13,695 -49.70 0.0446
2017-11-14 2017-09-30 13F ARRAY BIOPHARMA COM 04269X105 2,213,718 1,632,709 281.01 27,229 459.92 0.0965
2017-08-14 2017-06-30 13F ARRAY BIOPHARMA COM 04269X105 581,009 -1,701,591 -74.55 4,863 -76.17 0.0176
2017-05-15 2017-03-31 13F ARRAY BIOPHARMA COM 04269X105 2,282,600 2,282,600 20,406 0.0687
2017-02-14 2016-12-31 13F ARRAY BIOPHARMA COM 04269X105 0 -450,229 -100.00 0 -100.00
2016-11-14 2016-09-30 13F ARRAY BIOPHARMA COM 04269X105 450,229 450,229 0.00 3,039 0.0110
2016-05-16 2016-03-31 13F ARRAY BIOPHARMA COM 04269X105 0 -205,654 -100.00 0 -100.00
2016-02-16 2015-12-31 13F ARRAY BIOPHARMA COM 04269X105 205,654 84,297 69.46 868 56.96 0.0042
2015-11-16 2015-09-30 13F ARRAY BIOPHARMA COM 04269X105 121,357 -888,918 -87.99 553 -92.41 0.0028
2016-02-09 2015-06-30 13F/A-1 ARRAY BIOPHARMA COM 04269X105 1,010,275 195,412 23.98 7,284 21.28 0.0354
2015-08-14 2015-06-30 13F ARRAY BIOPHARMA COM 04269X105 1,010,275 7,284
2016-02-09 2015-03-31 13F/A-1 ARRAY BIOPHARMA COM 04269X105 814,863 452,744 125.03 6,006 250.61 0.0296
2015-05-15 2015-03-31 13F ARRAY BIOPHARMA COM 04269X105 814,863 6,006
2016-02-09 2014-12-31 13F/A-1 ARRAY BIOPHARMA COM 04269X105 362,119 362,119 0.00 1,713 0.00 0.0098
2015-02-17 2014-12-31 13F ARRAY BIOPHARMA COM 04269X105 362,119 1,713
2014-05-15 2014-03-31 13F ARRAY BIOPHARMA COM 04269X105 0 -187,453 -100.00 0 -100.00
2014-02-14 2013-12-31 13F ARRAY BIOPHARMA COM 04269X105 187,453 187,453 939 0.0052
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.