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12th Street Asset Management Company, LLC

CIK 1633703 · latest 13F filed 13 August 2026 · Read the filing on EDGAR

12th Street Asset Management Company, LLC reported 32 US-listed holdings worth $701.8 million in its 13F for the quarter ended 30 June 2026, filed 13 August 2026. Its largest: SPDR Ser Trust (7.3%), Clean Harbors Inc. (7.1%) and Pinnacle Financial Partners, Inc. (6.2%). Against the quarter before, it opened 4 positions, added to 15, trimmed 12 and sold out of 4.

Reported holdings$701.8M+14.8% on Q1 2026
Positions32as many as Q1 2026
The largest ten55.3%of its reported holdings
Latest 13FQ2 2026filed 13 August 2026
Where the money is
OpenedAdded toTrimmed
BIL7.3%CLH7.1%PNFP6.2%KNX6.1%KEX5.7%CRH5.1%SGI4.6%HQY4.4%BC4.4%DELL4.3%DY4.0%RBA3.7%POOL3.5%CIEN18 more30.3%

The 14 largest of its 32 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.

Reported holdings, quarter by quarter
Q3 2024: $593.0 million in 30 positions$593MQ3 24Q4 2024: $606.6 million in 31 positions$607MQ4 24Q1 2025: $586.8 million in 29 positions$587MQ1 25Q2 2025: $581.7 million in 30 positions$582MQ2 25Q3 2025: $591.2 million in 30 positions$591MQ3 25Q4 2025: $606.8 million in 32 positions$607MQ4 25Q1 2026: $611.4 million in 32 positions$611MQ1 26Q2 2026: $701.8 million in 32 positions$702MQ2 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What its reported holdings returned

Held through each quarter, the holdings it reported returned +27.2% over the 7 quarters to 30 June 2026, against +30.2% for the S&P 500.

Its reported holdingsThe S&P 500
100110120130Q3 24Q4 24Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Its holdings +27.2%S&P 500 +30.2%

Not the fund's own return: each 13F's holdings are kept unchanged until the next one, so trades inside a quarter, dividends, cash and fees are left out. A rough guide to how its picks have done over time.

What it did on the quarter

Opened 4Added 15Held 1Trimmed 12Sold out 4
Opened: 4Added: 15Held: 1Trimmed: 12Sold out: 4

Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held

Opened 4

  1. Pool Corp. POOL$24.6 million
  2. Ss&C Technologies Holdings Inc. SSNC$20.8 million
  3. Marten Transport Ltd. MRTN$13.2 million
  4. SiteOne Landscape Supply, Inc. SITE$8.6 million

Added to 15

  1. SPDR Ser Trust BIL+152,724 shares · +37%
  2. Healthequity, Inc. HQY+94,029 shares · +37%
  3. Knight-Swift Transportation Holdings Inc. KNX+59,397 shares · +12%
  4. Pinnacle Financial Partners, Inc. PNFP+28,382 shares · +7%
  5. Granite Construction Inc. GVA+14,666 shares · +24%
  6. Louisiana-Pacific Corp. LPX+25,733 shares · +60%
  7. Brunswick Corp. BC+14,401 shares · +4%
  8. RB Global Inc. RBA+9,974 shares · +5%

and 7 more in the table below

Trimmed 12

  1. LKQ Corp. LKQ-657,788 shares · -48%
  2. Clean Harbors Inc. CLH-38,182 shares · -19%
  3. Ciena Corp. CIEN-16,710 shares · -26%
  4. StoneX Group Inc. SNEX-66,368 shares · -35%
  5. Dycom Industries Inc. DY-13,373 shares · -20%
  6. I3 Verticals Inc. IIIV-298,940 shares · -57%
  7. Autozone Inc. AZO-1,719 shares · -21%
  8. FB Financial Corp. FBK-74,540 shares · -30%

and 4 more in the table below

Sold out of 4

  1. First Horizon Corp. FHN$15.9 million last quarter
  2. Acushnet Holdings Corp. GOLF$5.8 million last quarter
  3. American Homes 4 Rent AMH$3.9 million last quarter
  4. iShares Trust IWV$641,276 last quarter

What it holds

CompanySharesValueOf its bookChange in shares
SPDR Ser Trust BIL562.5K$51.5 million7.34%+152.7K
Clean Harbors Inc. CLH166.5K$49.8 million7.09%-38.2K
Pinnacle Financial Partners, Inc. PNFP430.7K$43.4 million6.19%+28.4K
Knight-Swift Transportation Holdings Inc. KNX548.8K$42.7 million6.09%+59.4K
Kirby Corp. KEX292.6K$39.8 million5.67%+1.4K
CRH Public Ltd. Co. CRH335.9K$35.9 million5.12%+3.3K
Somnigroup International Inc. SGI413.0K$32.4 million4.61%+4.4K
Healthequity, Inc. HQY345.4K$31.2 million4.44%+94.0K
Brunswick Corp. BC366.3K$30.9 million4.40%+14.4K
Dell Technologies Inc. DELL70.6K$30.5 million4.34%-4.5K
Dycom Industries Inc. DY55.1K$27.9 million3.97%-13.4K
RB Global Inc. RBA222.2K$25.9 million3.69%+10.0K
Pool Corp. POOL114.6K$24.6 million3.51%new
Ciena Corp. CIEN46.8K$22.9 million3.27%-16.7K
Autozone Inc. AZO6.6K$21.0 million3.00%-1.7K
Ss&C Technologies Holdings Inc. SSNC335.2K$20.8 million2.96%new
Generac Holdings Inc. GNRC68.3K$20.0 million2.85%+1.4K
LKQ Corp. LKQ727.0K$19.1 million2.73%-657.8K
Masco Corp. MAS202.2K$16.4 million2.34%-22.8K
StoneX Group Inc. SNEX120.7K$14.3 million2.04%-66.4K
Marten Transport Ltd. MRTN758.6K$13.2 million1.88%new
Granite Construction Inc. GVA77.1K$12.2 million1.74%+14.7K
Progressive Corp. PGR51.1K$11.2 million1.59%+489
Rush Enterprises Inc. RUSHA144.3K$10.5 million1.50%-51.0K
FB Financial Corp. FBK172.5K$9.5 million1.36%-74.5K
Diamondback Energy, Inc. FANG49.7K$8.7 million1.24%+393
SiteOne Landscape Supply, Inc. SITE75.5K$8.6 million1.23%new
Construction Partners, Inc. ROAD55.4K$6.6 million0.94%+3.8K
Eagle Materials Inc. EXP27.1K$6.1 million0.87%-10
Louisiana-Pacific Corp. LPX68.6K$5.4 million0.77%+25.7K
I3 Verticals Inc. IIIV223.9K$4.8 million0.68%-298.9K
Harrow Inc. HROW91.4K$3.9 million0.55%-77.3K
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before; the 4 it sold out of are in the box above.