def find_biggest_position(positions):
biggest_position = {'stock':'','size':-1}
for stock in positions.keys():
psn = positions[stock]
if 'Position' not in str(type(psn))
continue
if psn.cost_basis == 0 or psn.amount == 0:
continue
psn_size = psn.last_sale_price * psn.amount
if psn_size > biggest_position['size']:
biggest_position['size'] = psn_size
biggest_position['stock'] = psn.sid
return biggest_position
Find biggest position in your portfolio
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