Imperial Petroleum Inc.
DE ˙ DB ˙ MHY3894J1872
42,12 € ↓ -0,56 (-1,32%)
2019-07-30
DEL PRIS
SecurityDE:AR2 / Imperial Petroleum Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership207,405 shares
Latest Disclosed Value $ 887,693
UBS Group AG ownership in AR2 / Imperial Petroleum Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 207,405 shares of Imperial Petroleum Inc. (DE:AR2) valued at $887,693 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 403,747 shares of Imperial Petroleum Inc.. This represents a change in shares of -48.63% during the quarter. The current value of the position is $8,736,936 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (AR2) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:AR2 / Imperial Petroleum Inc. Historical Put/Call Ratio
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)
2026-05-05 2026-03-31 13F IMPERIAL PETE COM NEW Y3894J187 207,405 -196,342 -48.63 888 -39.29 0.0000
2026-01-29 2025-12-31 13F IMPERIAL PETE COM NEW Y3894J187 403,747 384,005 1,945.12 1,462 1,454.26 0.0002
2025-11-13 2025-09-30 13F IMPERIAL PETE COM NEW Y3894J187 19,742 -21,266 -51.86 94 -25.40 0.0000
2025-08-14 2025-06-30 13F IMPERIAL PETE COM NEW Y3894J187 41,008 -343,679 -89.34 126 -86.62 0.0000
2025-05-13 2025-03-31 13F IMPERIAL PETE COM NEW Y3894J187 384,687 361,360 1,549.11 942 1,245.71 0.0002
2025-02-14 2024-12-31 13F IMPERIAL PETE COM NEW Y3894J187 23,327 11,159 91.71 70 40.00 0.0000
2024-11-14 2024-09-30 13F IMPERIAL PETE COM NEW Y3894J187 12,168 5,427 80.51 50 92.31 0.0000
2024-08-14 2024-06-30 13F IMPERIAL PETE COM NEW Y3894J187 6,741 2,513 59.44 26 100.00 0.0000
2024-05-13 2024-03-31 13F IMPERIAL PETE COM NEW Y3894J187 4,228 4,147 5,119.75 13 0.0000
2024-02-09 2023-12-31 13F IMPERIAL PETE COM NEW Y3894J187 81 81 0 0.0000
2019-11-14 2019-09-30 13F ARRAY BIOPHARMA COM 04269X105 0 -1,301,849 -100.00 0 -100.00
2019-08-14 2019-06-30 13F ARRAY BIOPHARMA COM 04269X105 1,301,849 1,159,448 814.21 60,314 1,637.15 0.0232
2019-05-14 2019-03-31 13F ARRAY BIOPHARMA COM 04269X105 142,401 -34,909 -19.69 3,472 37.45 0.0014
2019-02-14 2018-12-31 13F ARRAY BIOPHARMA COM 04269X105 177,310 30,064 20.42 2,526 12.87 0.0011
2018-11-14 2018-09-30 13F ARRAY BIOPHARMA COM 04269X105 147,246 45,388 44.56 2,238 30.95 0.0009
2018-08-14 2018-06-30 13F ARRAY BIOPHARMA COM 04269X105 101,858 -211,687 -67.51 1,709 -66.60 0.0007
2018-05-15 2018-03-31 13F ARRAY BIOPHARMA COM 04269X105 313,545 217,672 227.04 5,117 316.69 0.0022
2018-02-14 2017-12-31 13F ARRAY BIOPHARMA COM 04269X105 95,873 2,312 2.47 1,228 6.69 0.0005
2017-11-14 2017-09-30 13F ARRAY BIOPHARMA COM 04269X105 93,561 -21,844 -18.93 1,151 19.15 0.0005
2017-11-14 2017-06-30 13F/A-1 ARRAY BIOPHARMA COM 04269X105 115,405 78,090 209.27 966 189.22 0.0005
2017-08-14 2017-06-30 13F ARRAY BIOPHARMA COM 04269X105 115,405 78,090 966
2017-11-14 2017-03-31 13F/A-1 ARRAY BIOPHARMA COM 04269X105 37,315 -130,204 -77.72 334 -77.31 0.0002
2017-05-12 2017-03-31 13F ARRAY BIOPHARMA COM 04269X105 37,315 -130,204 334
2017-02-14 2016-12-31 13F ARRAY BIOPHARMA COM 04269X105 167,519 138,635 479.97 1,472 654.87 0.0008
2016-11-14 2016-09-30 13F ARRAY BIOPHARMA COM 04269X105 28,884 -52,191 -64.37 195 -32.53 0.0001
2016-08-12 2016-06-30 13F ARRAY BIOPHARMA COM 04269X105 81,075 20,029 32.81 289 60.56 0.0002
2016-05-12 2016-03-31 13F ARRAY BIOPHARMA COM 04269X105 61,046 -241,469 -79.82 180 -85.90 0.0001
2016-02-16 2015-12-31 13F ARRAY BIOPHARMA COM 04269X105 302,515 230,588 320.59 1,277 289.33 0.0008
2015-11-13 2015-09-30 13F ARRAY BIOPHARMA COM 04269X105 71,927 10,556 17.20 328 -25.96 0.0002
2015-08-14 2015-06-30 13F ARRAY BIOPHARMA COM 04269X105 61,371 1,747 2.93 443 0.91 0.0003
2015-05-14 2015-03-31 13F ARRAY BIOPHARMA COM 04269X105 59,624 629 1.07 439 57.35 0.0003
2015-02-17 2014-12-31 13F ARRAY BIOPHARMA COM 04269X105 58,995 58,995 279 0.0002
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-08-14 2015-06-30 13F ARRAY BIOPHARMA COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F ARRAY BIOPHARMA COM Call 95,000 5,488.24 700 8,650.00 n/a n/a n/a
2015-02-17 2014-12-31 13F ARRAY BIOPHARMA COM Call 1,700 8 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-08-14 2015-06-30 13F ARRAY BIOPHARMA COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F ARRAY BIOPHARMA COM Put 91,900 45,850.00 677 67,600.00 n/a n/a n/a
2015-02-17 2014-12-31 13F ARRAY BIOPHARMA COM Put 200 1 n/a n/a n/a
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.