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ACAT

ACAT commonly refers to two distinct topics, depending on the context. In finance, Automated Customer Account Transfer (ACAT) is the electronic process used to move a brokerage account from one firm to another. Transfers may include cash and securities and are coordinated through industry utilities that administer the service, often called ACATS. Customers initiate the transfer with the receiving firm; the process follows the Uniform Transfer Guide. Typical completion time is three to six business days, though asset type and firm policies can affect timing. Partial transfers are possible, and open orders may need to be canceled or settled before or during the transfer.

ACAT also denotes Acyl-CoA cholesterol acyltransferase, a family of endoplasmic reticulum enzymes that esterify cholesterol to

form
cholesterol
esters.
The
two
main
vertebrate
isoforms
are
ACAT1
(SOAT1)
and
ACAT2
(SOAT2).
ACAT1
is
widely
expressed
and
linked
to
cellular
cholesterol
storage
and
foam
cell
formation
in
atherosclerosis;
ACAT2
is
expressed
mainly
in
liver
and
intestine
and
influences
dietary
cholesterol
distribution.
Enzyme
activity
impacts
lipoprotein
metabolism
and
lipid
homeostasis.
Inhibitors
have
been
explored
as
potential
anti-atherosclerotic
therapies,
but
no
ACAT
inhibitors
have
been
approved
for
clinical
use.