Stocks/Funds/CIK 1633703

12th Street Asset Management Company, LLC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1633703
Assets
$611M
+4.2% YoY
Holdings
32
Lifetime alpha vs market
+0.41% annual
Average hold time
3.7 yr
median 2.9 yr

Quarterly history

Cum return +55% vs S&P +52% · α +3% lifetimeAUM $611M · peak $611MFlow $-35M (-6%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-2.45%
trims when stocks drop
when a holding falls −10%+
Middle response
-1.70%
baseline attrition
Rally response
-0.60%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
CLHClean Harbors, Inc.$59M9.6%+45.5%10.5 yr
LKQLKQ Corporation$41M6.7%-28.4%10.5 yr
KEXKirby Corporation$39M6.3%+31.6%2.8 yr
BILState Street SPDR Bloomb$38M6.1%3.5 yr
CRH.LCRH plc$35M5.7%2.3 yr
$35M5.7%0.3 yr
SGISomnigroup International$30M4.9%+24.4%1.5 yr
KNXKnight-Swift Transportat$28M4.6%+34.4%8.8 yr
AZOAutoZone, Inc.$28M4.6%-11.4%6.5 yr
BCBrunswick Corporation$26M4.2%+38.7%1.0 yr
CIENCiena Corporation$25M4.0%+542.4%1.8 yr
DYDycom Industries, Inc.$23M3.8%+122.4%4.8 yr
HQYHealthEquity, Inc.$21M3.4%-5.4%1.0 yr
$20M3.3%3.0 yr
FHNFirst Horizon Corporatio$16M2.6%+20.6%0.5 yr

Portfolio composition (YoY)

Industry mix
Waste Management9.6%+3.1pp$59M
Unknown9.0%+4.4pp$55M
Auto - Parts6.7%-0.3pp$41M
Construction Materials6.6%-0.4pp$40M
Marine Shipping6.3%-0.7pp$39M
Asset Management6.2%-6.6pp$38M
Engineering & Construction6.0%+3.8pp$36M
Household & Personal Products4.9%+0.2pp$30M
Banks - Regional4.7%-3.1pp$29M
Trucking4.6%+2.5pp$28M
Country
US85.3%-4.8pp
Unknown9.0%+4.4pp
IE5.7%+0.4pp
Top 5: 34.4% · Top 10: 58.4% · Top 25: 95.1%

Winners

TickerPrev $PnLYoY %
CIEN$19M+0.10B542.4%
CLH$38M+0.02B45.5%
KEX$41M+0.01B31.6%
SGI$28M+0.01B24.4%
DY$4M+0.01B122.4%

Losers

TickerPrev $PnLYoY %
LKQ$41M-0.01B-28.4%
PGR$28M-0.01B-25.5%
AZO$36M-0.00B-11.4%
MAS$18M-0.00B-11.5%
EXP$9M-0.00B-14.2%

Top buys this quarter · 15

KNX Knight-Swift Transportation Ho+$18M
GNRC Generac Holdings Inc.+$12M
SNEX StoneX Group Inc.+$5M
HROW Harrow Health, Inc.+$3M
LKQ LKQ Corporation+$2M
DY Dycom Industries, Inc.+$0M
FBK FB Financial Corporation+$13M
EXP Eagle Materials Inc.+$5M
GOLF Acushnet Holdings Corp.+$0M
GVA Granite Construction Incorpora+$0M

Top sells this quarter · 15

CIEN Ciena Corporation$45M
PNFP Pinnacle Financial Partners, Iexit$36M
AXTA Axalta Coating Systems Ltd.exit$6M
IIIV i3 Verticals, Inc.$2M
CLH Clean Harbors, Inc.$49M
SGI Somnigroup International Inc$1M
AZO AutoZone, Inc.$1M
FHN First Horizon Corporation$1M
KEX Kirby Corporation$33M
MAS Masco Corporation$1M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$611M32+21.44%+17.59%+3.84%-0.03B
2025-12-31$607M32+9.67%+17.72%-8.05%-0.01B
2025-09-30$591M30+3.63%+17.52%-13.88%-0.02B
2025-06-30$582M30+7.95%+14.94%-6.99%-0.03B
2025-03-31$587M29+0.17%+8.30%-8.13%+0.00B
2024-12-31$607M31+15.82%+24.89%-9.07%+0.02B
2024-09-30$593M30+28.16%+36.04%-7.87%-0.00B
2024-06-30$548M30+15.33%+24.49%-9.16%-0.01B
2024-03-31$577M29+23.10%+29.62%-6.53%-0.01B
2023-12-31$532M32+18.03%+26.18%-8.14%-0.00B
2023-09-30$488M33+14.30%+21.57%-7.27%+0.00B
2023-06-30$496M33+15.85%+19.42%-3.57%+0.00B
2023-03-31$478M30+3.30%-7.82%+11.12%-0.01B
2022-12-31$457M28+6.43%+7.56%-1.14%+0.08B
2022-09-30$358M28-0.61%-4.93%+4.31%-0.04B
2022-06-30$397M28-8.35%-16.11%+7.76%-0.00B