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 | |
|---|---|---|---|---|---|---|
|
VER
951
DELISTED
VEREIT, Inc.
VER
| $118K | ﹤0.01% |
3,178
+1,966
| +162% | +$73K |
|
952
Norwegian Cruise Line
NCLH
$11.5B
| $117K | ﹤0.01% |
+2,493
| New | +$117K |
|
953
Dynavax Technologies
DVAX
$1.15B
| $116K | ﹤0.01% |
+7,648
| New | +$116K |
|
954
Kite Realty
KRG
$5.02B
| $116K | ﹤0.01% |
+6,843
| New | +$116K |
|
|
CBM
955
DELISTED
Cambrex Corporation
CBM
| $116K | ﹤0.01% |
2,220
-317
| -12% | -$16.6K |
|
|
BHVN
956
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $116K | ﹤0.01% |
2,954
-19,901
| -87% | -$781K |
|
957
Apogee Enterprises
APOG
$904M
| $115K | ﹤0.01% |
2,388
-1,329
| -36% | -$64K |
|
958
Carnival PLC
CUK
$38.1B
| $115K | ﹤0.01% |
1,999
+1,155
| +137% | +$66.4K |
|
|
TPIC
959
DELISTED
TPI Composites
TPIC
| $115K | ﹤0.01% |
+3,949
| New | +$115K |
|
960
Universal Insurance Holdings
UVE
$694M
| $115K | ﹤0.01% |
+3,298
| New | +$115K |
|
961
Valvoline
VVV
$5.05B
| $115K | ﹤0.01% |
5,336
-7,367
| -58% | -$159K |
|
962
Western Alliance Bancorporation
WAL
$9.87B
| $115K | ﹤0.01% |
+2,043
| New | +$115K |
|
|
SYNH
963
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $115K | ﹤0.01% |
2,465
-5,419
| -69% | -$253K |
|
964
Assembly Biosciences
ASMB
$178M
| $114K | ﹤0.01% |
243
+119
| +96% | +$55.8K |
|
965
ProShares Ultra Energy
DIG
$71.7M
| $114K | ﹤0.01% |
+2,092
| New | +$114K |
|
966
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.45B
| $114K | ﹤0.01% |
1,605
-3,164
| -66% | -$225K |
|
967
Thomson Reuters
TRI
$78B
| $114K | ﹤0.01% |
+2,496
| New | +$114K |
|
|
CCXI
968
DELISTED
ChemoCentryx, Inc.
CCXI
| $114K | ﹤0.01% |
8,724
+7,642
| +706% | +$99.9K |
|
969
Hartford Financial Services
HIG
$36.9B
| $113K | ﹤0.01% |
2,225
-4,941
| -69% | -$251K |
|
970
ProShares Short QQQ
PSQ
$539M
| $113K | ﹤0.01% |
+714
| New | +$113K |
|
971
TransUnion
TRU
$18.1B
| $113K | ﹤0.01% |
+1,588
| New | +$113K |
|
|
CNH
972
CNH Industrial
CNH
$14.2B
| $113K | ﹤0.01% |
+12,331
| New | +$113K |
|
|
KND
973
DELISTED
Kindred Healthcare
KND
| $113K | ﹤0.01% |
+12,641
| New | +$113K |
|
974
Fortuna Silver Mines
FSM
$2.39B
| $112K | ﹤0.01% |
19,757
+4,245
| +27% | +$24.1K |
|
975
Sibanye-Stillwater
SBSW
$6.16B
| $112K | ﹤0.01% |
46,506
+6,550
| +16% | +$15.8K |
|