Form 13-F position report

AMBAC FINL GROUP INC NEW COM S

Reported by DIMENSIONAL FUND ADVISORS LP

OSG CUSIP 023139884 Manager CIK 0000354204

Reported 2,537,946 shares, up 366,605 (16.9%) from the prior quarter.

Reported value -1.0%; share count 16.9% vs. the prior quarter.

Added
% of reported 13F value 0.01% This manager · Q3 2023
Shares 2,537,946 Quarter-end amount reported
Reported value $30,608,159 Fair value at quarter end
Consecutive quarters held 40 Through Q3 2023

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2021-09-30 19499000
2021-12-31 23676000
2022-03-31 16288000
2022-06-30 17727000
2022-09-30 18880000
2022-12-31 26551000
2023-03-31 26174177
2023-06-30 30919138
2023-09-30 30608159
2023-12-31 42908464
2024-03-31 44793767
2024-06-30 37856947
2024-09-30 31437294
2024-12-31 34232223
2025-03-31 22372039
2025-06-30 17009625
2025-09-30 17860855
2025-12-31 13114300
2026-03-31 6092068
2026-06-30 4474177

Quarterly position history

How this manager's reported quarter-end position changed over time.

20 quarters
Quarterly reported position history for AMBAC FINL GROUP INC NEW COM S held by DIMENSIONAL FUND ADVISORS LP.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q2 2026 Reduced 716,947 -593,185 (-45.3%) < 0.01% $4,474,177 2026-08-11
Q1 2026 Reduced 1,310,132 -375,495 (-22.3%) < 0.01% $6,092,068 2026-05-07
Q4 2025 Reduced 1,685,627 -455,420 (-21.3%) < 0.01% $13,114,300 2026-02-12
Q3 2025 Reduced 2,141,047 -254,690 (-10.6%) < 0.01% $17,860,855 2025-11-12
Q2 2025 Reduced 2,395,737 -161,143 (-6.3%) < 0.01% $17,009,625 2025-08-12
Q1 2025 Reduced 2,556,880 -149,271 (-5.5%) < 0.01% $22,372,039 2025-05-13
Q4 2024 Reduced 2,706,151 -98,249 (-3.5%) < 0.01% $34,232,223 2025-02-13
Q3 2024 Reduced 2,804,400 -148,561 (-5.0%) < 0.01% $31,437,294 2024-11-07
Q2 2024 Added 2,952,961 +87,077 (3.0%) < 0.01% $37,856,947 2024-08-09
Q1 2024 Added 2,865,884 +262,205 (10.1%) 0.01% $44,793,767 2024-05-10
Q4 2023 Added 2,603,679 +65,733 (2.6%) 0.01% $42,908,464 2024-02-07
Q3 2023 Added 2,537,946 +366,605 (16.9%) 0.01% $30,608,159 2023-11-09
Q2 2023 Added 2,171,341 +480,450 (28.4%) < 0.01% $30,919,138 2023-08-09
Q1 2023 Added 1,690,891 +168,422 (11.1%) < 0.01% $26,174,177 2023-05-12
Q4 2022 Added 1,522,469 +41,660 (2.8%) < 0.01% $26,551,000 2023-02-09
Q3 2022 Reduced 1,480,809 -81,148 (-5.2%) < 0.01% $18,880,000 2022-11-10
Q2 2022 Reduced 1,561,957 -4,302 (-0.3%) < 0.01% $17,727,000 2022-08-12
Q1 2022 Added 1,566,259 +91,106 (6.2%) < 0.01% $16,288,000 2022-05-13
Q4 2021 Added 1,475,153 +113,493 (8.3%) < 0.01% $23,676,000 2022-02-09
Q3 2021 Reduced 1,361,660 -314,925 (-18.8%) < 0.01% $19,499,000 2021-11-12
Five years are shown. A free account unlocks the complete reported history. Unlock full history

Who else reported the position

182 managers reported AMBAC FINL GROUP INC NEW COM S for Q3 2023.

Managers reporting AMBAC FINL GROUP INC NEW COM S in Q3 2023.
Manager Activity Shares Change % of reported 13F Reported value Tenure
BlackRock Inc Reduced 6,830,561 -3,789 < 0.01% $82,376,566 42 qtrs
VANGUARD GROUP INC Reduced 4,823,779 -135,709 < 0.01% $58,174,775 42 qtrs
DIMENSIONAL FUND ADVISORS LP This report Added 2,537,946 +366,605 0.01% $30,608,159 40 qtrs
FMR LLC Added 2,020,168 +26,012 < 0.01% $24,363,226 42 qtrs
STATE STREET CORPORATION Added 1,609,573 +75,328 < 0.01% $19,411,450 32 qtrs
Repertoire Partners LP Reduced 1,521,770 -720,783 28.58% $18,352,546 8 qtrs
Boussard & Gavaudan Investment Management LLP Reduced 1,373,651 -16,837 1.96% $16,813,488 14 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 901,255 +28,564 < 0.01% $10,870,556 42 qtrs
Invesco Ltd Added 885,456 +49,529 < 0.01% $10,678,600 35 qtrs
Bracebridge Capital LLC Unchanged 799,234 0 1.53% $9,638,762 16 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
September 30, 2023
Filed
November 09, 2023
Filing type
13F-HR
Position type
COM NEW

Voting authority reported

Sole
2,377,197
Shared
109,095
None
51,654

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.