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 |
Invesco QQQ Trust
QQQ
|
+$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$75.9M |
| 3 |
NVIDIA
NVDA
|
+$42.6M |
| 4 |
Netflix
NFLX
|
+$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$24.3M |
| 5 |
Broadcom
AVGO
|
+$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1076
First Financial Bankshares
FFIN
$5.03B
| $81K | ﹤0.01% |
2,809
-206
| -7% | -$5.94K |
|
1077
Prospect Capital
PSEC
$1.3B
| $81K | ﹤0.01% |
+15,862
| New | +$81K |
|
|
PGTI
1078
DELISTED
PGT, Inc.
PGTI
| $81K | ﹤0.01% |
5,218
+4,299
| +468% | +$66.7K |
|
1079
Canadian Solar
CSIQ
$727M
| $80K | ﹤0.01% |
4,167
+357
| +9% | +$6.85K |
|
|
GOGL
1080
DELISTED
Golden Ocean Group
GOGL
| $80K | ﹤0.01% |
20,851
+3,862
| +23% | +$14.8K |
|
1081
Universal Technical Institute
UTI
$1.52B
| $80K | ﹤0.01% |
+11,582
| New | +$80K |
|
|
MINI
1082
DELISTED
Mobile Mini Inc
MINI
| $80K | ﹤0.01% |
2,728
-2,075
| -43% | -$60.9K |
|
|
RNWK
1083
DELISTED
RealNetworks Inc
RNWK
| $80K | ﹤0.01% |
+62,272
| New | +$80K |
|
1084
Lennar Class A
LEN
$36.3B
| $79K | ﹤0.01% |
1,334
-24,412
| -95% | -$1.45M |
|
1085
SPDR Portfolio S&P 500 ETF
SPLG
$85.7B
| $79K | ﹤0.01% |
+2,194
| New | +$79K |
|
|
CNSL
1086
DELISTED
Consolidated Communications Holdings, Inc.
CNSL
| $79K | ﹤0.01% |
11,808
-4,272
| -27% | -$28.6K |
|
1087
Genesco
GCO
$358M
| $78K | ﹤0.01% |
3,611
-3,292
| -48% | -$71.1K |
|
1088
Guess, Inc.
GES
$871M
| $78K | ﹤0.01% |
+8,115
| New | +$78K |
|
1089
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.32B
| $77K | ﹤0.01% |
+882
| New | +$77K |
|
1090
Deckers Outdoor
DECK
$17.4B
| $77K | ﹤0.01% |
+2,364
| New | +$77K |
|
1091
Reading International Class A
RDI
$34.1M
| $77K | ﹤0.01% |
18,167
+16,267
| +856% | +$68.9K |
|
1092
Tucows
TCX
$205M
| $77K | ﹤0.01% |
1,349
-2,062
| -60% | -$118K |
|
1093
Veritone
VERI
$180M
| $77K | ﹤0.01% |
+5,241
| New | +$77K |
|
1094
Embraer
ERJ
$11B
| $76K | ﹤0.01% |
12,782
-53,474
| -81% | -$318K |
|
1095
InterDigital
IDCC
$8.37B
| $76K | ﹤0.01% |
+1,352
| New | +$76K |
|
1096
Lattice Semiconductor
LSCC
$9B
| $76K | ﹤0.01% |
2,711
-22,665
| -89% | -$635K |
|
1097
Curtiss-Wright
CW
$19.3B
| $75K | ﹤0.01% |
+843
| New | +$75K |
|
1098
Fidelity MSCI Consumer Discretionary Index ETF
FDIS
$1.9B
| $75K | ﹤0.01% |
+1,443
| New | +$75K |
|
1099
Laureate Education
LAUR
$4.21B
| $75K | ﹤0.01% |
+7,622
| New | +$75K |
|
1100
SITE Centers
SITC
$474M
| $75K | ﹤0.01% |
11,933
+9,331
| +359% | +$58.6K |
|