CIK: 0001089755
Total reported value
$689.9M
Reporting period: 2026-03-31 · Number of holdings: 31
SOUTHERNSUN ASSET MANAGEMENT, LLC disclosed 31 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $689.9M and a quarterly turnover rate of 14.2%.
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Southernsun Asset Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.042 — mathematically equivalent to about 24 equally-sized positions, close to its 31 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.56), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.9 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Trim BCO
-23.9% -$15.7M
Trim AEIS
-61.8% -$10.6M
Add DAR
-31.3% $7.4M
Trim MOD
-55.6% -$9.3M
Add BOOT
+41.0% $5.8M
Add MUSA
-8.2% $4.6M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | DAR | Darling Ingredients INC | Stock-Consumer Staples | 6.99% | +1.29% | -31.26% | |
| 2 | MUSA | Murphy USA INC | Stock-Consumer Disc | 6.07% | +0.87% | -8.16% | |
| 3 | BOOT | Boot Barn Holdings INC | Stock-Consumer Disc | 5.78% | +1.02% | +40.95% | |
| 4 | LPX | Louisiana-pacific CORP | Stock-Industrials | 5.12% | -0.03% | +6.26% | |
| 5 | EXTR | Extreme Networks INC | Stock-Other | 5.02% | +0.44% | +16.59% | |
| 6 | LOB | Live Oak Bancshares INC | Stock-Other | 4.95% | +0.02% | +0.43% | |
| 7 | USPH | U.s. Physical Therapy INC | Stock-Other | 4.78% | -0.45% | -8.26% | |
| 8 | BCO | Brink's Co/the | Stock-Industrials | 4.76% | -2.02% | -23.88% | |
| 9 | CXT | Crane Nxt Co | Stock-Industrials | 4.61% | +0.22% | +17.30% | |
| 10 | BDC | Belden INC | Stock-Tech | 4.30% | -0.27% | -8.04% | |
| 11 | AGCO | Agco CORP | Stock-Industrials | 4.15% | +0.22% | -8.44% | |
| 12 | MSA | Msa Safety INC | Stock-Industrials | 4.05% | -0.10% | -8.16% | |
| 13 | AWI | Armstrong World Industries | Stock-Industrials | 4.02% | -0.43% | +0.92% | |
| 14 | DORM | Dorman Products INC | Stock-Consumer Disc | 3.73% | +0.45% | +29.36% | |
| 15 | EPAC | Enerpac Tool Group CORP | Stock-Other | 3.51% | +0.30% | +10.69% | |
| 16 | MOD | Modine Manufacturing Co | Stock-Consumer Disc | 3.46% | -1.17% | -55.60% | |
| 17 | CSW | Csw Industrials INC | Stock-Industrials | 3.34% | +0.60% | +32.34% | |
| 18 | SCL | Stepan Co | Stock-Other | 2.74% | +0.04% | -7.10% | |
| 19 | NGVT | Ingevity CORP | Stock-Other | 2.59% | +0.33% | -8.04% | |
| 20 | SAM | Boston Beer Company Inc-a | Stock-Consumer Staples | 2.50% | +0.44% | -0.94% | |
| 21 | AEIS | Advanced Energy Industries | Stock-Industrials | 2.20% | -1.41% | -61.84% | |
| 22 | KAI | Kadant INC | Stock-Other | 1.82% | +0.03% | -4.47% | |
| 23 | THO | Thor Industries INC | Stock-Consumer Disc | 1.52% | -0.52% | -7.98% | |
| 24 | APG | Api Group CORP | Stock-Industrials | 1.50% | +0.15% | +1.00% | |
| 25 | GNRC | Generac Holdings INC | Stock-Industrials | 1.38% | +0.32% | -12.52% | |
| 26 | BR | Broadridge Financial Solutio | Stock-Tech | 1.07% | -0.33% | +1.01% | |
| 27 | WSO | Watsco INC | Stock-Industrials | 0.98% | +0.11% | +1.02% | |
| 28 | VMI | Valmont Industries | Stock-Industrials | 0.96% | -0.18% | -17.95% | |
| 29 | SEIC | Sei Investments Company | Stock-Financials | 0.77% | +0.01% | +1.37% | |
| 30 | OSK | Oshkosh CORP | Stock-Industrials | 0.66% | +0.31% | +53.70% | |
| 31 | FND | Floor & Decor Holdings Inc-a | Stock-Consumer Disc | 0.64% | — | +15.70% |
Performance for Q3 2026
+1.4%
Performance Last 4 Quarters
+24.9%
Based on 78% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 31 | $689.9M | 14 | |
| 2025-12-31 | 32 | $716.4M | 21 | |
| 2025-09-30 | 31 | $771.8M | 34 | |
| 2025-06-30 | 31 | $712.1M | 0 | |
| 2025-03-31 | 30 | $690.8M | 100 | |
| 2024-12-31 | 30 | $802.7M | 0 | |
| 2024-09-30 | 29 | $843.7M | 0 | |
| 2024-06-30 | 27 | $829.1M | 0 | |
| 2024-03-31 | 27 | $898.0M | 0 | |
| 2023-12-31 | 29 | $867.5M | 0 | |
| 2023-09-30 | 27 | $853.5M | 0 | |
| 2023-06-30 | 26 | $947.9M | 0 | |
| 2023-03-31 | 28 | $876.4M | 0 | |
| 2022-12-31 | 29 | $877.6M | 0 | |
| 2022-09-30 | 28 | $810.0M | 0 | |
| 2022-06-30 | 27 | $806.7M | 0 | |
| 2022-03-31 | 31 | $927.0M | 0 | |
| 2021-12-31 | 33 | $1.0B | 0 | |
| 2021-09-30 | 33 | $946.6M | 0 | |
| 2021-06-30 | 34 | $913.4M | 100 | |
| 2021-03-31 | 34 | $963.7M | 21 | |
| 2020-12-31 | 39 | $872.1M | 35 | |
| 2020-09-30 | 39 | $763.6M | 13 | |
| 2020-06-30 | 37 | $740.7M | 18 | |
| 2020-03-31 | 34 | $675.8M | 55 | |
| 2019-12-31 | 32 | $1.1B | 12 | |
| 2019-09-30 | 30 | $1.2B | 9 | |
| 2019-06-30 | 32 | $1.3B | 16 | |
| 2019-03-31 | 31 | $1.4B | 23 | |
| 2018-12-31 | 35 | $1.4B | 51 | |
| 2018-09-30 | 33 | $2.2B | 38 | |
| 2018-06-30 | 35 | $3.1B | 21 | |
| 2018-03-31 | 35 | $3.6B | 15 | |
| 2017-12-31 | 37 | $3.9B | 19 | |
| 2017-09-30 | 35 | $4.1B | 10 | |
| 2017-06-30 | 33 | $3.9B | 11 | |
| 2017-03-31 | 34 | $3.9B | 13 | |
| 2016-12-31 | 36 | $3.9B | 15 | |
| 2016-09-30 | 34 | $4.0B | 12 | |
| 2016-06-30 | 36 | $3.8B | 12 | |
| 2016-03-31 | 36 | $4.0B | 14 | |
| 2015-12-31 | 39 | $4.2B | 16 | |
| 2015-09-30 | 43 | $4.5B | 29 | |
| 2015-06-30 | 42 | $5.5B | 13 | |
| 2015-03-31 | 38 | $5.3B | 17 | |
| 2014-12-31 | 40 | $5.1B | 13 | |
| 2014-09-30 | 36 | $5.1B | 16 | |
| 2014-06-30 | 33 | $5.5B | 16 | |
| 2014-03-31 | 33 | $5.0B | 7 | |
| 2013-12-31 | 35 | $4.9B | 21 | |
| 2013-09-30 | 33 | $4.1B | 32 | |
| 2013-06-30 | 32 | $3.3B | — |
Southernsun Asset Management, LLC's most significant position changes for 2026-03-31: Sold out: Ishares Russell 2000 ETF (IWM); Trim: Brink's Co/the (BCO) — shares -23.88%; Trim: Advanced Energy Industries (AEIS) — shares -61.84%; Trim: Darling Ingredients INC (DAR) — shares -31.26%; Trim: Modine Manufacturing Co (MOD) — shares -55.60%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | DAR | Darling Ingredients INC | +1.3% | -31.26% | Trim |
| 2 | BOOT | Boot Barn Holdings INC | +1% | +40.95% | Add |
| 3 | MUSA | Murphy USA INC | +0.9% | -8.16% | Trim |
| 4 | CSW | Csw Industrials INC | +0.6% | +32.34% | Add |
| 5 | DORM | Dorman Products INC | +0.5% | +29.36% | Add |
| 6 | SAM | Boston Beer Company Inc-a | +0.4% | -0.94% | Trim |
| 7 | EXTR | Extreme Networks INC | +0.4% | +16.59% | Add |
| 8 | NGVT | Ingevity CORP | +0.3% | -8.04% | Trim |
| 9 | GNRC | Generac Holdings INC | +0.3% | -12.52% | Trim |
| 10 | OSK | Oshkosh CORP | +0.3% | +53.70% | Add |
| 11 | EPAC | Enerpac Tool Group CORP | +0.3% | +10.69% | Add |
| 12 | AGCO | Agco CORP | +0.2% | -8.44% | Trim |
| 13 | CXT | Crane Nxt Co | +0.2% | +17.30% | Add |
| 14 | APG | Api Group CORP | +0.2% | +1.00% | Add |
| 15 | WSO | Watsco INC | +0.1% | +1.02% | Add |
| 16 | SCL | Stepan Co | 0% | -7.10% | Trim |
| 17 | KAI | Kadant INC | 0% | -4.47% | Trim |
| 18 | LOB | Live Oak Bancshares INC | 0% | +0.43% | Add |
| 19 | SEIC | Sei Investments Company | 0% | +1.37% | Add |
| 20 | FND | Floor & Decor Holdings Inc-a | — | +15.70% | Add |
| 21 | LPX | Louisiana-pacific CORP | 0% | +6.26% | Add |
| 22 | MSA | Msa Safety INC | -0.1% | -8.16% | Trim |
| 23 | VMI | Valmont Industries | -0.2% | -17.95% | Trim |
| 24 | BDC | Belden INC | -0.3% | -8.04% | Trim |
| 25 | BR | Broadridge Financial Solutio | -0.3% | +1.01% | Add |
| 26 | AWI | Armstrong World Industries | -0.4% | +0.92% | Add |
| 27 | USPH | U.s. Physical Therapy INC | -0.5% | -8.26% | Trim |
| 28 | THO | Thor Industries INC | -0.5% | -7.98% | Trim |
| 29 | MOD | Modine Manufacturing Co | -1.2% | -55.60% | Trim |
| 30 | AEIS | Advanced Energy Industries | -1.4% | -61.84% | Trim |
| 31 | BCO | Brink's Co/the | -2% | -23.88% | Trim |
| 32 | IWM | Ishares Russell 2000 ETF | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-13 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-14 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-15 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-15 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-12 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-14 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-14 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-14 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-15 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-14 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-15 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2017-01-27 | Amendment | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-12 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-13 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-12 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-16 | Amendment | View on EDGAR |
| 2015-09-30 | 2015-11-13 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-14 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-15 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-03-09 | Amendment | View on EDGAR |
| 2014-12-31 | 2015-02-13 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-13 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-14 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-14 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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