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Super Investors Sonic GP LLC
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Sonic GP LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$45.4M
Positions
15
Quarter ended
December 31, 2024
Filed
February 14, 2025

Reported portfolio value by quarter (9 quarters reported)

$150M $43.8M
Q4 22 Q2 23 Q4 23 Q2 24 Q4 24

$133M in Q4 2022 → $45.4M now. Hover for any quarter.

Holdings

As reported for the quarter ended December 31, 2024. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Fennec Pharmaceuticals Inc 33.5% Unchanged 2,407,357 $15.2M
UA United Airls Hldgs Inc 11.1% Trimmed 54% 51,785 $5.03M
BF Brighthouse Finl Inc 10.6% Unchanged 100,000 $4.8M
AS Algoma Stl Group Inc 8.6% Unchanged 400,000 $3.91M
Regenxbio Inc 6.9% Unchanged 403,079 $3.12M
Citigroup Inc 6.3% Unchanged 40,740 $2.87M
Six Flags Entertainment Corp 5.3% Unchanged 50,000 $2.41M
United Parks & Resorts Inc 4.9% Unchanged 39,579 $2.22M
PG Paramount Global 4.6% Unchanged 200,000 $2.09M
UN Uniqure Nv 1.9% Unchanged 50,000 $883K
Authid Inc 1.5% Unchanged 115,000 $692K
Tronox Holdings PLC 1.4% Unchanged 63,055 $635K
MO Mural Oncology Pub Ltd Co 1.2% Unchanged 166,984 $538K
Ree Automotive Ltd 1.2% Trimmed 54% 59,576 $526K
AS Algoma Stl Group Inc 0.9% Unchanged 279,995 $420K

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
UA United Airls Hldgs Inc Trimmed −60,000 −$5.83M 11.1%
Ree Automotive Ltd Trimmed −71,097 −$628K 1.2%

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

Company Action Shares changed Value of change % of portfolio
Cedar Fair L P Exited −50,000 −$2.72M —
Citigroup Inc Trimmed −40,000 −$2.5M 5.8%
Six Flags Entertainment Corp New +50,000 +$2.02M 4.6%
Regenxbio Inc Trimmed −50,000 −$525K 9.7%
Authid Inc Trimmed −10,000 −$62.9K 1.7%

Q2 2024

quarter ended June 30, 2024 · filed August 14, 2024

Company Action Shares changed Value of change % of portfolio
Cedar Fair L P Trimmed −70,000 −$3.8M 5.6%
UA United Airls Hldgs Inc Trimmed −60,000 −$2.92M 11.2%
PG Paramount Global New +200,000 +$2.08M 4.3%
VF Virtu Finl Inc Exited −100,000 −$2.05M —
Citigroup Inc Trimmed −20,000 −$1.27M 10.6%
Regenxbio Inc Trimmed −90,000 −$1.05M 10.9%
United Parks & Resorts Inc Trimmed −14,654 −$796K 4.4%

Q1 2024

quarter ended March 31, 2024 · filed May 15, 2024

Company Action Shares changed Value of change % of portfolio
SA Spirit Airls Inc Exited −700,000 −$11.5M —
United Parks & Resorts Inc Trimmed −45,767 −$2.57M 4.0%
Regenxbio Inc Added +100,000 +$2.11M 15.1%
Adverum Biotechnologies Inc Exited −2,000,000 −$1.51M —
BF Brighthouse Finl Inc Trimmed −20,000 −$1.03M 6.8%
Cedar Fair L P Trimmed −20,000 −$838K 6.6%
MO Mural Oncology Pub Ltd Co New +166,984 +$817K 1.1%

Q4 2023

quarter ended December 31, 2023 · filed February 14, 2024

Company Action Shares changed Value of change % of portfolio
MU Manchester Utd PLC New Exited −550,000 −$10.9M —
AS Algoma Stl Group Inc Trimmed −700,000 −$7.02M 4.6%
GF Genworth Finl Inc Exited −833,830 −$4.89M —
SA Spirit Airls Inc Added +200,000 +$3.28M 13.2%
Siriuspoint Ltd Exited −302,185 −$3.07M —
SE Seaworld Entmt Inc Trimmed −50,000 −$2.64M 6.1%
BF Brighthouse Finl Inc Trimmed −40,000 −$2.12M 7.3%
Hawaiian Holdings Inc Exited −300,000 −$1.9M —
Regenxbio Inc Trimmed −75,000 −$1.35M 9.1%
Ree Automotive Ltd New +130,673 +$672K 0.8%

Showing the 10 largest of 14 changes.

Q3 2023

quarter ended September 30, 2023 · filed November 14, 2023

Company Action Shares changed Value of change % of portfolio
US United States Stl Corp New Exited −300,000 −$7.5M —
EP Enterprise Prods Partners L Exited −200,000 −$5.27M —
MU Manchester Utd PLC New Trimmed −200,000 −$3.96M 10.6%
Regenxbio Inc Trimmed −225,000 −$3.7M 8.3%
Bp PLC Exited −100,000 −$3.53M —
Siriuspoint Ltd Trimmed −200,000 −$2.03M 3.0%
BF Brighthouse Finl Inc Trimmed −40,000 −$1.96M 7.6%
SA Spirit Airls Inc Trimmed −100,000 −$1.65M 8.0%
Olympic Steel Inc Exited −30,000 −$1.47M —
Authid Inc New +125,000 +$969K 0.9%

Showing the 10 largest of 16 changes.

Q2 2023

quarter ended June 30, 2023 · filed August 14, 2023

Company Action Shares changed Value of change % of portfolio
MU Manchester Utd PLC New New +750,000 +$18.3M 12.2%
Regenxbio Inc Added +550,000 +$11M 9.9%
UF Us Foods Hldg Corp Exited −200,000 −$7.39M —
Radian Group Inc Exited −300,000 −$6.63M —
Siriuspoint Ltd Added +100,000 +$903K 3.0%

Q1 2023

quarter ended March 31, 2023 · filed May 15, 2023

Company Action Shares changed Value of change % of portfolio
GF Genworth Finl Inc Trimmed −500,000 −$2.51M 3.2%
Adverum Biotechnologies Inc Trimmed −2,552,068 −$1.83M 1.1%

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