S&CO INC

Q2 2026 13F-HR Holdings

Location
Boston, MA
Holdings as of
6/30/2026
Date filed
8/6/2026
Form type
13F-HR
Num holdings
222
Total value ($000)
$1,730,972
Net value change ($000)
+119,104 (7.4%)
New positions
14
Sold out positions
10
Turnover %
10.3%
Sector allocation + QoQ delta (equities-only)
Prev filing: 5/7/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q1 2026
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
EXXONMOBIL HOLDINGS CORP 71,915 NEW
CAT 30,167 43.1%
PANW 17,388 124.8%
GOOGL 7,851 23.2%
LLY 6,955 35.1%
GOOGL 6,556 24.0%
UNH 6,356 53.3%
AMZN 5,886 14.3%
RHHBY 4,997 72.6%
AAPL 4,894 8.3%
Top Reduces (Value $000, Stocks/ETFs)
XOM -89,241 -100.0%
GLD -4,988 -14.4%
LILA -4,063 -76.7%
CCJ -3,632 -10.2%
ABT -3,581 -17.5%
DBRG -3,443 -94.8%
BSX -3,408 -32.0%
INTU -3,280 -52.2%
OKTA -3,041 -53.1%
AR -2,962 -14.3%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type