<s>
A	O
geometric	B-Language
Brownian	I-Language
motion	I-Language
(	O
GBM	O
)	O
(	O
also	O
known	O
as	O
exponential	B-Language
Brownian	I-Language
motion	I-Language
)	O
is	O
a	O
continuous-time	O
stochastic	O
process	O
in	O
which	O
the	O
logarithm	O
of	O
the	O
randomly	O
varying	O
quantity	O
follows	O
a	O
Brownian	O
motion	O
(	O
also	O
called	O
a	O
Wiener	O
process	O
)	O
with	O
drift	O
.	O
</s>
<s>
Geometric	B-Language
Brownian	I-Language
motion	I-Language
is	O
used	O
to	O
model	O
stock	O
prices	O
in	O
the	O
Black	O
–	O
Scholes	O
model	O
and	O
is	O
the	O
most	O
widely	O
used	O
model	O
of	O
stock	O
price	O
behavior	O
.	O
</s>
<s>
Apart	O
from	O
modeling	O
stock	O
prices	O
,	O
Geometric	B-Language
Brownian	I-Language
motion	I-Language
has	O
also	O
found	O
applications	O
in	O
the	O
monitoring	O
of	O
trading	O
strategies	O
.	O
</s>
