Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Apple
AAPL
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
FNHC
901
DELISTED
FedNat Holding Company Common Stock
FNHC
| $132K | ﹤0.01% |
+5,760
| New | +$132K |
|
902
Gannett
GCI
$610M
| $131K | ﹤0.01% |
7,141
-4,643
| -39% | -$85.2K |
|
903
Oil States International
OIS
$334M
| $131K | ﹤0.01% |
+4,106
| New | +$131K |
|
904
Alaska Air
ALK
$7.34B
| $130K | ﹤0.01% |
+2,169
| New | +$130K |
|
905
Halozyme
HALO
$8.87B
| $130K | ﹤0.01% |
7,717
+1,392
| +22% | +$23.5K |
|
|
SHYF
906
DELISTED
The Shyft Group
SHYF
| $130K | ﹤0.01% |
+8,630
| New | +$130K |
|
|
AD
907
Array Digital Infrastructure, Inc.
AD
$4.43B
| $130K | ﹤0.01% |
3,534
+1,784
| +102% | +$65.6K |
|
|
ATSG
908
DELISTED
Air Transport Services Group, Inc.
ATSG
| $130K | ﹤0.01% |
5,761
-11,679
| -67% | -$264K |
|
|
MXWL
909
DELISTED
Maxwell Technologies Inc
MXWL
| $130K | ﹤0.01% |
+25,009
| New | +$130K |
|
910
AngloGold Ashanti
AU
$31.3B
| $129K | ﹤0.01% |
15,751
-5,930
| -27% | -$48.6K |
|
911
Sealed Air
SEE
$4.86B
| $129K | ﹤0.01% |
+3,044
| New | +$129K |
|
912
Commault Systems
CVLT
$8.23B
| $128K | ﹤0.01% |
1,952
-8,724
| -82% | -$572K |
|
913
First Bancorp
FBP
$3.51B
| $128K | ﹤0.01% |
16,740
+10,023
| +149% | +$76.6K |
|
914
ProShares Ultra FTSE China 50 of PROSHARES TRUST
XPP
$19.6M
| $128K | ﹤0.01% |
1,803
-1,191
| -40% | -$84.6K |
|
915
Altisource Portfolio Solutions
ASPS
$126M
| $127K | ﹤0.01% |
547
+472
| +629% | +$110K |
|
916
Cleveland-Cliffs
CLF
$5.35B
| $127K | ﹤0.01% |
+15,090
| New | +$127K |
|
|
OILU
917
DELISTED
ProShares UltraPro 3x Crude Oil ETF
OILU
| $127K | ﹤0.01% |
2,017
+1,715
| +568% | +$108K |
|
918
Great Lakes Dredge & Dock
GLDD
$793M
| $126K | ﹤0.01% |
24,128
-4,775
| -17% | -$24.9K |
|
|
HIVE
919
DELISTED
AEROHIVE NETWORKS, INC.
HIVE
| $126K | ﹤0.01% |
31,986
+26,360
| +469% | +$104K |
|
|
RESI
920
DELISTED
Front Yard Residential Corporation Common Stock
RESI
| $126K | ﹤0.01% |
12,160
+8,128
| +202% | +$84.2K |
|
921
Camden Property Trust
CPT
$11.9B
| $125K | ﹤0.01% |
1,375
+715
| +108% | +$65K |
|
922
Oshkosh
OSK
$8.7B
| $125K | ﹤0.01% |
1,785
+511
| +40% | +$35.8K |
|
923
Silicon Motion
SIMO
$2.88B
| $125K | ﹤0.01% |
2,378
+178
| +8% | +$9.36K |
|
924
VirnetX
VHC
$82.3M
| $125K | ﹤0.01% |
1,846
-364
| -16% | -$24.6K |
|
|
DRNA
925
DELISTED
Dicerna Pharmaceuticals, Inc.
DRNA
| $125K | ﹤0.01% |
+10,226
| New | +$125K |
|