Stocks/Funds/CIK 1082461

S&CO INC

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1082461
Assets
$1.61B
+8.2% YoY
Holdings
218
Lifetime alpha vs market
-3.51% annual
Average hold time
5.9 yr
median 5.8 yr

Quarterly history

Cum return +32% vs S&P +52% · α -20% lifetimeAUM $1.6B · peak $1.6BFlow $6M (+0%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+1.18%
adds when stocks drop
when a holding falls −10%+
Middle response
-0.59%
baseline attrition
Rally response
-2.02%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
XOMExxon Mobil Corporation$89M5.5%+47.6%1.3 yr
BRK-BBerkshire Hathaway Inc.$79M4.9%10.5 yr
MSFTMicrosoft Corporation$70M4.4%-0.6%10.5 yr
CATCaterpillar Inc.$70M4.3%+117.8%10.5 yr
CHDChurch & Dwight Co., Inc$61M3.8%-14.1%10.5 yr
ECLEcolab Inc.$60M3.7%+6.0%10.5 yr
AAPLApple Inc.$59M3.7%+14.7%10.5 yr
$51M3.2%10.5 yr
AMZNAmazon.com, Inc.$41M2.5%+9.5%9.5 yr
ADPAutomatic Data Processin$41M2.5%-31.8%10.5 yr
JNJJohnson & Johnson$38M2.4%+51.5%10.5 yr
CCJCameco Corporation$36M2.2%+164.4%6.0 yr
$35M2.2%10.5 yr
GOOGAlphabet Inc.$34M2.1%+84.3%10.5 yr
APDAir Products and Chemica$27M1.7%+0.5%10.5 yr

Portfolio composition (YoY)

Industry mix
Unknown21.6%+3.6pp$349M
Chemicals - Specialty7.2%-0.4pp$117M
Oil & Gas Integrated5.9%+1.2pp$95M
Software - Infrastructure5.8%+0.6pp$93M
Internet Content & Information5.3%+1.1pp$86M
Insurance - Diversified4.9%-1.0pp$79M
Agricultural - Machinery4.4%+1.8pp$72M
Household & Personal Products4.3%-1.2pp$70M
Drug Manufacturers - General4.2%+1.3pp$67M
Consumer Electronics3.7%-0.0pp$60M
Country
US72.7%-3.5pp
Unknown21.6%+3.6pp
CA2.2%+0.6pp
NL1.4%-0.1pp
GB0.8%-0.0pp
CH0.4%-0.1pp
BM0.4%-0.5pp
IE0.3%+0.1pp
Top 5: 22.9% · Top 10: 38.5% · Top 25: 62.1%

Winners

TickerPrev $PnLYoY %
CAT$38M+0.04B117.8%
CCJ$24M+0.04B164.4%
XOM$65M+0.03B47.6%
GOOG$19M+0.02B84.3%
JNJ$28M+0.01B51.5%

Losers

TickerPrev $PnLYoY %
ADP$63M-0.02B-31.8%
CHD$72M-0.01B-14.1%
ABT$34M-0.01B-21.1%
PYPL$12M-0.00B-30.3%
MOS$31M-0.00B-2.7%

Top buys this quarter · 15

MSFT Microsoft Corporation+$70M
PYPL PayPal Holdings, Inc.+$20M
INTU Intuit Inc.+$3M
MA Mastercard Incorporated+$3M
V Visa Inc.+$2M
AMZN Amazon.com, Inc.+$41M
LLY Eli Lilly and Company+$20M
OKTA Okta, Inc.+$1M
PANW Palo Alto Networks, Inc.+$14M
CHD Church & Dwight Co., Inc.+$1M

Top sells this quarter · 15

CAT Caterpillar Inc.$60M
CCJ Cameco Corporation$33M
ABT Abbott Laboratories$3M
SIRI Sirius XM Holdings Inc.$3M
MIDD The Middleby Corporation$2M
LILA Liberty Latin America Ltd.$1M
PEP PepsiCo, Inc.$12M
CHTR Charter Communications, Inc.$1M
CTSH Cognizant Technology Solutions$1M
BEN Franklin Resources, Inc.$1M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$1.61B218+11.39%+17.59%-6.20%+0.01B
2025-12-31$1.61B218+10.19%+17.72%-7.53%-0.04B
2025-09-30$1.63B222+7.90%+17.52%-9.61%+0.01B
2025-06-30$1.56B223+10.26%+14.94%-4.69%-0.02B
2025-03-31$1.49B217+4.61%+8.30%-3.70%+0.04B
2024-12-31$1.47B210+12.89%+24.89%-12.00%-0.04B
2024-09-30$1.53B219+23.42%+36.04%-12.62%+0.01B
2024-06-30$1.43B217+12.59%+24.49%-11.90%+0.00B
2024-03-31$1.42B210+20.18%+29.62%-9.45%+0.03B
2023-12-31$1.30B192+18.76%+26.18%-7.42%-0.01B
2023-09-30$1.22B183+19.24%+21.57%-2.33%+0.01B
2023-06-30$1.24B182+15.96%+19.42%-3.46%-0.03B
2023-03-31$1.18B180-5.82%-7.82%+2.00%-0.02B
2022-12-31$1.14B179+8.53%+7.56%+0.97%-0.06B
2022-09-30$1.11B184-5.72%-4.93%-0.80%-0.01B
2022-06-30$1.19B187-12.54%-16.11%+3.57%-0.06B