Octave Specialty Group, Inc.
US ˙ NYSE ˙ US0231398845
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityAMBC / Octave Specialty Group, Inc.
InstitutionMan Group plc
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Man Group plc closes position in AMBC / Octave Specialty Group, Inc.

On August 14, 2025 - Man Group plc filed a 13F-HR form disclosing ownership of 0 shares of Octave Specialty Group, Inc. (US:AMBC) valued at $0 USD as of June 30, 2025. The entity filed a previous 13F-HR on May 15, 2025 disclosing 12,198 shares of Octave Specialty Group, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 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)
2025-08-14 2025-06-30 13F AMBAC FINL GROUP COM NEW 023139884 0 -12,198 -100.00 0 -100.00
2025-05-15 2025-03-31 13F AMBAC FINL GROUP COM NEW 023139884 12,198 12,198 107 0.0003
2025-02-14 2024-12-31 13F AMBAC FINL GROUP COM NEW 023139884 0 -42,348 -100.00 0 -100.00
2024-11-14 2024-09-30 13F AMBAC FINL GROUP COM NEW 023139884 42,348 -30,523 -41.89 475 -49.25 0.0012
2024-08-14 2024-06-30 13F AMBAC FINL GROUP COM NEW 023139884 72,871 72,871 934 0.0024
2024-05-15 2024-03-31 13F AMBAC FINL GROUP COM NEW 023139884 0 -52,817 -100.00 0 -100.00
2024-02-14 2023-12-31 13F AMBAC FINL GROUP COM NEW 023139884 52,817 870 5.71 0.0024
2023-11-14 2023-09-30 13F AMBAC FINL GROUP COM NEW 023139884 823 52.69 0.0026
2023-08-14 2023-06-30 13F AMBAC FINL GROUP COM NEW 023139884 37,893 540 208.00 0.0017
2023-05-15 2023-03-31 13F AMBAC FINL GROUP COM NEW 023139884 175 -32.17 0.0006
2023-02-14 2022-12-31 13F AMBAC FINL GROUP COM NEW 023139884 14,795 258 45.76 0.0009
2022-08-15 2022-06-30 13F AMBAC FINL GROUP COM NEW 023139884 177 36.15 0.0008
2022-05-16 2022-03-31 13F AMBAC FINL GROUP COM NEW 023139884 12,500 12,500 130 0.0005
2019-11-14 2019-09-30 13F AMBAC FINL GROUP COM NEW 023139884 0 -305,735 -100.00 0 -100.00
2019-08-14 2019-06-30 13F AMBAC FINL GROUP COM NEW 023139884 305,735 -455,965 -59.86 5,152 -62.67 0.0186
2019-05-15 2019-03-31 13F AMBAC FINL GROUP COM NEW 023139884 761,700 6,584 0.87 13,803 6.03 0.0524
2019-02-14 2018-12-31 13F AMBAC FINL GROUP COM NEW 023139884 755,116 -102,642 -11.97 13,018 -25.68 0.0579
2018-11-14 2018-09-30 13F AMBAC FINL GROUP COM NEW 023139884 857,758 91,018 11.87 17,515 15.08 0.0640
2018-08-14 2018-06-30 13F AMBAC FINL GROUP COM NEW 023139884 766,740 766,740 15,220 0.0626
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.