Terminal · Institutions

Every 13F-reported equity position this quarter, with its quarter-over-quarter change — each row traces back to the SEC filing.

SOUTHERNSUN ASSET MANAGEMENT, LLC 13F Holdings -- Portfolio & Top Positions (2026-06-30)

SOUTHERNSUN ASSET MANAGEMENT, LLC (CIK 1089755) reported $742.8M across 29 reported positions in its SEC 13F filing for 2026-06-30. Largest positions: EXTR ($54.6M, 7.34%), LPX ($45.4M, 6.12%), BOOT ($44.1M, 5.94%), MUSA ($43.1M, 5.80%), CXT ($42.4M, 5.71%). Source: SEC Form 13F.

RankTickerCompanyValue% PortfolioSharesAction
1EXTRExtreme Networks$54.6M7.34%1.7MTrimmed
2LPXLouisiana-Pacific Corp$45.4M6.12%577,698Added
3BOOTBoot Barn Holdings Inc$44.1M5.94%268,599Trimmed
4MUSAMurphy USA Inc.$43.1M5.80%79,962Trimmed
5CXTCrane NXT$42.4M5.71%829,182Added
6DARDarling Ingredients Inc.$41.7M5.61%763,305Trimmed
7LOBLive Oak Bancshares Inc$38.2M5.14%934,751Trimmed
8AGCOAGCO Corp.$36.6M4.92%305,473Added
9USPHUS Physical Therapy Inc$36.2M4.88%527,765Added
10DORMDorman Products Inc$35.9M4.84%263,383Added
11MSAMSA Safety Inc$34.9M4.69%199,654Added
12AWIArmstrong World Industries Inc$32.2M4.34%200,875Added
13EPACEnerpac Tool Group$30.5M4.10%850,182Added
14BCOThe Brink's Co.$30.3M4.08%320,542Added
15CSWCSW Industrials$26.4M3.55%94,698Added
16SAMThe Boston Beer Co Inc$23.3M3.14%131,877Added
17MODModine Manufacturing Co$20.5M2.75%76,603Trimmed
18NGVTIngevity Corp$18.2M2.46%244,260Trimmed
19THOThor Industries Inc.$18.0M2.42%238,971Added
20KAIKadant Inc$15.3M2.06%48,681Added
21AEISAdvanced Energy Industries Inc$14.4M1.94%38,683Trimmed
22GNRCGenerac Holdings Inc$11.8M1.59%40,377Trimmed
23APGAPi Group$10.4M1.40%244,797Trimmed
24VMIValmont Industries Inc$7.9M1.06%13,601Trimmed
25WSOWatsco Inc$7.4M1.00%17,853Trimmed

Source: SEC Form 13F filings · as of 2026-06-30