COST
COSTCO WHOLESALE CORP /NEWD4115-min delayed · EOD close902.60 −0.83% downas of 2026-09-09mkt cap $400B
Retail-Variety Stores · SIC 5331 · CIK 0000909832
Who’s trading COST
Corporate insiders on Form 4, House members under the STOCK Act, and the funds reporting a position in their 13F.
Corporate insiders
0 bought · 3 sold
$0 bought · $3.8M sold
Congress
6 buys · 5 sells
$631K bought · $574K sold, at range midpoints
Funds holding
2 filers
$1.5B reported
The counts above are free. Who they are, and what each of them traded, is part of Pro — see what it includes.
Form 4 insider trades are exact and filed within two business days. Congressional figures are range midpoints disclosed up to 45 days after the trade, and 13F positions are a quarter-end snapshot. All three are a record of what was disclosed, not a signal.