Stocks/Funds/CIK 1088859

PARTHENON LLC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1088859
Assets
$875M
+7.6% YoY
Holdings
127
Lifetime alpha vs market
-1.64% annual
Average hold time
7.8 yr
median 10.5 yr

Quarterly history

Cum return +108% vs S&P +128% · α -21% lifetimeAUM $875M · peak $927MFlow $8M (+1%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+0.52%
adds when stocks drop
when a holding falls −10%+
Middle response
-1.01%
baseline attrition
Rally response
-0.92%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
MSFTMicrosoft Corporation$84M9.6%-0.6%10.5 yr
BRK-BBerkshire Hathaway Inc.$66M7.6%10.5 yr
GOOGLAlphabet Inc.$45M5.2%10.5 yr
METAMeta Platforms, Inc.$39M4.4%-0.4%8.0 yr
GOOGAlphabet Inc.$32M3.7%+84.3%10.5 yr
AAPLApple Inc.$32M3.7%+14.7%10.5 yr
GLWCorning Incorporated$31M3.6%+201.5%10.5 yr
XOMExxon Mobil Corporation$30M3.4%+47.6%6.0 yr
JNJJohnson & Johnson$30M3.4%+51.5%10.5 yr
WMTWalmart Inc.$28M3.2%+42.8%10.5 yr
FASTFastenal Company$25M2.9%+22.1%10.5 yr
PAYXPaychex, Inc.$23M2.6%-38.2%10.5 yr
DOVDover Corporation$22M2.5%+20.0%10.5 yr
AXPAmerican Express Company$20M2.3%+13.3%10.5 yr
PGThe Procter & Gamble Com$19M2.2%-12.9%10.5 yr

Portfolio composition (YoY)

Industry mix
Internet Content & Information13.3%+2.2pp$117M
Software - Infrastructure9.8%-1.8pp$85M
Insurance - Diversified8.1%-2.0pp$71M
Drug Manufacturers - General6.6%+0.7pp$58M
Asset Management5.0%+0.6pp$44M
Hardware, Equipment & Parts3.9%+2.3pp$35M
Consumer Electronics3.7%+0.1pp$32M
Oil & Gas Integrated3.7%+0.7pp$32M
Discount Stores3.4%+0.7pp$29M
Industrial - Distribution2.9%+0.3pp$26M
Country
US97.1%-1.4pp
IE1.7%+0.6pp
Unknown1.1%+0.7pp
SG0.1%
CH0.0%+0.0pp
CN0.0%-0.0pp
Top 5: 30.5% · Top 10: 47.8% · Top 25: 75.4%

Winners

TickerPrev $PnLYoY %
GLW$11M+0.02B201.5%
GOOG$22M+0.02B84.3%
JNJ$21M+0.01B51.5%
XOM$23M+0.01B47.6%
WMT$20M+0.01B42.8%

Losers

TickerPrev $PnLYoY %
BKNG$16M-0.02B-96.3%
PAYX$39M-0.01B-38.2%
PG$25M-0.00B-12.9%
WAT$12M-0.00B-19.2%
SYK$14M-0.00B-11.1%

Top buys this quarter · 10

CLAR Clarus Corporation+$3M
WSBC WesBanco, Inc.+$0M
MSFT Microsoft Corporation+$84M
PAYX Paychex, Inc.+$23M
BKNG Booking Holdings Inc.+$16M
T AT&T Inc.+$0M
CSCO Cisco Systems, Inc.+$0M
IJR iShares Core S&P Small-Cap ETF+$0M
VEA Vanguard FTSE Developed Market+$0M
VOO Vanguard S&P 500 ETF+$9M

Top sells this quarter · 15

NVDA NVIDIA Corporation$2M
GOOG Alphabet Inc.$1M
META Meta Platforms, Inc.$1M
TPB Turning Point Brands, Inc.$0M
MO Altria Group, Inc.$0M
AAPL Apple Inc.$0M
AXP American Express Company$0M
JNJ Johnson & Johnson$25M
PG The Procter & Gamble Company$0M
TSCO Tractor Supply Companyexit$0M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$875M127+9.36%+17.59%-8.23%+0.01B
2025-12-31$927M131+14.75%+17.72%-2.97%+0.01B
2025-09-30$903M129+12.28%+17.52%-5.24%-0.02B
2025-06-30$874M126+13.35%+14.94%-1.59%-0.01B
2025-03-31$813M122+5.91%+8.30%-2.40%+0.00B
2024-12-31$827M123+17.66%+24.89%-7.23%-0.01B
2024-09-30$837M125+29.60%+36.04%-6.44%-0.00B
2024-06-30$787M121+17.32%+24.49%-7.18%-0.01B
2024-03-31$789M121+23.55%+29.62%-6.07%+0.00B
2023-12-31$723M117+21.18%+26.18%-5.00%-0.01B
2023-09-30$666M114+21.14%+21.57%-0.43%-0.00B
2023-06-30$692M116+17.53%+19.42%-1.89%-0.01B
2023-03-31$653M114-3.30%-7.82%+4.52%+0.00B
2022-12-31$610M110-13.73%-18.17%+4.44%+0.00B
2022-09-30$554M107-12.82%-15.51%+2.68%+0.00B
2022-06-30$590M111-6.36%-10.62%+4.26%-0.02B