James Simons
Renaissance Technologies LLC
James Simons, along with a team of mathematicians, physicists, and computer scientists, founded Renaissance Technologies LLC — arguably the best quantitative investment company. Its flagship Medallion Fund has delivered an average annual return of over 66% since 1988.
Stock Trading
All
Buys
Sells
No.
Name
Action
Shares Traded
% Change
Shares Held
Mkt Value (Date)
Report Date
Steelcase Inc (US)
SCS
Exit
-341.10K
-100.00%
0.00
$0.00
2025-12-10
Petmed Express Inc (US)
PETS
Buy
+75.31K
+5.30%
1.34M
$4.30M
2025-12-05
Opendoor Technologies Inc (US)
OPEN
Buy
+17.27M
+39.80%
26.10M
$208.03M
2025-09-30
4
Itau Unibanco Holding SA (US)
ITUB
Sell
-12.91M
-46.80%
14.64M
$104.33M
2025-09-30
5
Rivian Automotive Inc (US)
RIVN
Buy
+10.39M
+45.60%
12.39M
$181.81M
2025-09-30
6
Baytex Energy Ord Shs (CA)
BTE
Sell
-9.60M
-51.00%
9.20M
$21.55M
2025-09-30
7
Robinhood Markets Inc (US)
HOOD
Sell
-9.51M
-82.60%
2.00M
$286.68M
2025-09-30
8
Transocean Ltd (US)
RIG
Sell
-8.89M
-83.50%
1.75M
$5.45M
2025-09-30
9
BRF SA (US)
BRFS
Exit
-8.52M
-100.00%
0.00
$0.00
2025-09-30
10
Telefonaktiebolaget LM Ericsson (US)
ERIC
Sell
-8.43M
-39.00%
13.15M
$108.74M
2025-09-30
