12th Street Asset Management Company, LLC
Registered adviserRegulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
| Rosters | Regulatory AUM | Main clients |
|---|---|---|
| Mar 2026 to Oct 2026 | $621,561,338 | Diversified |
| Apr 2025 to Feb 2026 | $625,213,430 | Diversified |
| Apr 2024 to Mar 2025 | $545,826,979 | Diversified |
| May 2023 to Mar 2024 | $481,933,681 | Diversified |
| Apr 2023 | $481,933,681 | Diversified |
| Apr 2022 to Mar 2023 | $546,103,023 | Individuals and high net worth (52%) |
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.
Closest benchmark: the S&P MidCap 400 as of 2026-06-30, active share 96.4%; sector active share 44.4% against the combined 13F book's sector weights.
Over time 26 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
32 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Portfolio Trend
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Industrials | 41.4% | $293,027,570 |
| Consumer Cyclical | 16.9% | $119,208,011 |
| Technology | 11.2% | $78,997,709 |
| Financial Services | 11.1% | $78,458,865 |
| Unclassified | 7.3% | $51,546,217 |
| Basic Materials | 5.9% | $42,031,650 |
| Healthcare | 5.0% | $35,077,764 |
| Energy | 1.2% | $8,736,266 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| — | +152,724 | 562,486 | $51,546,217 | ||
| HQY | Healthequity, Inc. | +94,029 | 345,390 | $31,195,624 | |
| KNX | Knight-Swift Transportation Holdings Inc. | +59,397 | 548,785 | $42,733,887 | |
| PNFP | Pinnacle Financial Partners, Inc. | +28,382 | 430,655 | $43,444,476 | |
| LPX | Louisiana-Pacific Corp | +25,733 | 68,586 | $5,394,974 | |
| GVA | Granite Construction Inc | +14,666 | 77,058 | $12,181,328 | |
| BC | Brunswick Corp | +14,401 | 366,273 | $30,854,837 | |
| RBA | Rb Global Inc. | +9,974 | 222,228 | $25,878,450 | |
| SGI | Somnigroup International Inc. | +4,403 | 412,964 | $32,376,377 | |
| ROAD | Construction Partners, Inc. | +3,802 | 55,366 | $6,575,819 | |
| CRH | Crh Public Ltd Co | +3,300 | 335,850 | $35,935,950 | |
| KEX | Kirby Corp | +1,426 | 292,564 | $39,779,927 | |
| GNRC | Generac Holdings Inc. | +1,354 | 68,264 | $19,988,381 | |
| PGR | Progressive Corp | +489 | 51,116 | $11,166,290 | |
| FANG | Diamondback Energy, Inc. | +393 | 49,700 | $8,736,266 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| LKQ | Lkq Corp | −657,788 | 727,020 | $19,142,436 | |
| IIIV | i3 Verticals, Inc. | −298,940 | 223,881 | $4,782,098 | |
| HROW | Harrow, Inc. | −77,322 | 91,409 | $3,882,140 | |
| FBK | FB Financial Corp | −74,540 | 172,500 | $9,547,875 | |
| SNEX | StoneX Group Inc. | −66,368 | 120,677 | $14,300,224 | |
| RUSHA | Rush Enterprises Inc \Tx\ | −51,026 | 144,300 | $15,798,685 | |
| CLH | Clean Harbors Inc | −38,182 | 166,534 | $49,752,032 | |
| MAS | Masco Corp | −22,810 | 202,155 | $16,449,352 | |
| CIEN | Ciena Corp | −16,710 | 46,777 | $22,946,925 | |
| DY | Dycom Industries Inc | −13,373 | 55,105 | $27,860,536 | |
| DELL | Dell Technologies Inc. | −4,493 | 70,617 | $30,468,410 | |
| AZO | Autozone Inc | −1,719 | 6,582 | $21,035,676 | |
| EXP | Eagle Materials Inc | −10 | 27,092 | $6,095,700 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarterSold Out
Positions the filer fully exited| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
|
|
Added | 562,486 | $51,546,217 | 7.29% | ||
| CLH |
Clean Harbors Inc
Industrials
|
Reduced | 166,534 | $49,752,032 | 7.04% | |
| PNFP |
Pinnacle Financial Partners, Inc.
Financial Services
|
Added | 430,655 | $43,444,476 | 6.14% | |
| KNX |
Knight-Swift Transportation Holdings Inc.
Industrials
|
Added | 548,785 | $42,733,887 | 6.04% | |
| KEX |
Kirby Corp
Industrials
|
Added | 292,564 | $39,779,927 | 5.63% | |
| CRH |
Crh Public Ltd Co
Basic Materials
|
Added | 335,850 | $35,935,950 | 5.08% | |
| SGI |
Somnigroup International Inc.
Consumer Cyclical
|
Added | 412,964 | $32,376,377 | 4.58% | |
| HQY |
Healthequity, Inc.
Healthcare
|
Added | 345,390 | $31,195,624 | 4.41% | |
| BC |
Brunswick Corp
Consumer Cyclical
|
Added | 366,273 | $30,854,837 | 4.36% | |
| DELL |
Dell Technologies Inc.
Technology
|
Reduced | 70,617 | $30,468,410 | 4.31% | |
| DY |
Dycom Industries Inc
Industrials
|
Reduced | 55,105 | $27,860,536 | 3.94% | |
| RBA |
Rb Global Inc.
Industrials
|
Added | 222,228 | $25,878,450 | 3.66% | |
| POOL |
Pool Corp
Industrials
|
NEW | 114,637 | $24,635,491 | 3.48% | |
| CIEN |
Ciena Corp
Technology
|
Reduced | 46,777 | $22,946,925 | 3.25% | |
| AZO |
Autozone Inc
Consumer Cyclical
|
Reduced | 6,582 | $21,035,676 | 2.97% | |
| SSNC |
SS&C Technologies Holdings Inc
Technology
|
NEW | 335,218 | $20,800,276 | 2.94% | |
| GNRC |
Generac Holdings Inc.
Industrials
|
Added | 68,264 | $19,988,381 | 2.83% | |
| LKQ |
Lkq Corp
Consumer Cyclical
|
Reduced | 727,020 | $19,142,436 | 2.71% | |
| MAS |
Masco Corp
Industrials
|
Reduced | 202,155 | $16,449,352 | 2.33% | |
| RUSHA |
Rush Enterprises Inc \Tx\
Consumer Cyclical
|
Reduced | 144,300 | $15,798,685 | 2.23% | |
| SNEX |
StoneX Group Inc.
Financial Services
|
Reduced | 120,677 | $14,300,224 | 2.02% | |
| MRTN |
Marten Transport Ltd
Industrials
|
NEW | 758,634 | $13,162,299 | 1.86% | |
| GVA |
Granite Construction Inc
Industrials
|
Added | 77,058 | $12,181,328 | 1.72% | |
| PGR |
Progressive Corp
Financial Services
|
Added | 51,116 | $11,166,290 | 1.58% | |
| FBK |
FB Financial Corp
Financial Services
|
Reduced | 172,500 | $9,547,875 | 1.35% | |
| FANG |
Diamondback Energy, Inc.
Energy
|
Added | 49,700 | $8,736,266 | 1.24% | |
| SITE |
SiteOne Landscape Supply, Inc.
Industrials
|
NEW | 75,475 | $8,635,094 | 1.22% | |
| ROAD |
Construction Partners, Inc.
Industrials
|
Added | 55,366 | $6,575,819 | 0.93% | |
| EXP |
Eagle Materials Inc
Basic Materials
|
Reduced | 27,092 | $6,095,700 | 0.86% | |
| LPX |
Louisiana-Pacific Corp
Industrials
|
Added | 68,586 | $5,394,974 | 0.76% | |
| IIIV |
i3 Verticals, Inc.
Technology
|
Reduced | 223,881 | $4,782,098 | 0.68% | |
| HROW |
Harrow, Inc.
Healthcare
|
Reduced | 91,409 | $3,882,140 | 0.55% |
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.