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 | |
|---|---|---|---|---|---|---|
976
Silicon Motion
SIMO
$2.84B
| $106K | ﹤0.01% |
+2,185
| New | +$106K |
|
977
Antero Midstream
AM
$8.79B
| $105K | ﹤0.01% |
20,751
-5,788
| -22% | -$29.3K |
|
|
SUM
978
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $105K | ﹤0.01% |
6,668
-54,705
| -89% | -$861K |
|
|
WDR
979
DELISTED
Waddell & Reed Financial, Inc.
WDR
| $105K | ﹤0.01% |
+6,818
| New | +$105K |
|
980
APA Corp
APA
$8.33B
| $104K | ﹤0.01% |
+7,717
| New | +$104K |
|
981
Lloyds Banking Group
LYG
$66.4B
| $104K | ﹤0.01% |
69,967
-275,608
| -80% | -$410K |
|
982
Cerus
CERS
$226M
| $103K | ﹤0.01% |
15,685
-49,950
| -76% | -$328K |
|
983
Energy Recovery
ERII
$776M
| $103K | ﹤0.01% |
13,658
-13,326
| -49% | -$100K |
|
984
ProShares UltraShort Euro
EUO
$33.8M
| $103K | ﹤0.01% |
+3,874
| New | +$103K |
|
|
HEES
985
DELISTED
H&E Equipment Services
HEES
| $103K | ﹤0.01% |
+5,619
| New | +$103K |
|
|
VG
986
DELISTED
Vonage Holdings Corporation
VG
| $103K | ﹤0.01% |
+10,336
| New | +$103K |
|
987
ProShares Ultra Energy
DIG
$72.4M
| $102K | ﹤0.01% |
+10,904
| New | +$102K |
|
988
nVent Electric
NVT
$15.3B
| $102K | ﹤0.01% |
5,489
-1,961
| -26% | -$36.4K |
|
989
Progyny
PGNY
$1.95B
| $102K | ﹤0.01% |
3,983
-1,361
| -25% | -$34.9K |
|
990
Devon Energy
DVN
$22.5B
| $101K | ﹤0.01% |
8,937
-80,171
| -90% | -$906K |
|
991
Perion Network
PERI
$415M
| $101K | ﹤0.01% |
19,393
+15,434
| +390% | +$80.4K |
|
992
Teucrium Wheat Fund
WEAT
$116M
| $101K | ﹤0.01% |
+20,127
| New | +$101K |
|
993
Federated Hermes
FHI
$4.1B
| $100K | ﹤0.01% |
4,249
+3,792
| +830% | +$89.2K |
|
994
Global Partners
GLP
$1.77B
| $100K | ﹤0.01% |
10,222
-1,436
| -12% | -$14K |
|
|
BAL
995
DELISTED
iPath Series B Bloomberg Cotton Subindex Total ReturnSM ETN
BAL
| $100K | ﹤0.01% |
+2,768
| New | +$100K |
|
996
Compass Diversified
CODI
$528M
| $99K | ﹤0.01% |
5,752
+1,638
| +40% | +$28.2K |
|
|
RCM
997
DELISTED
R1 RCM Inc. Common Stock
RCM
| $99K | ﹤0.01% |
8,937
-33,391
| -79% | -$370K |
|
998
Allot
ALLT
$397M
| $98K | ﹤0.01% |
9,425
-7,122
| -43% | -$74.1K |
|
999
AtriCure
ATRC
$1.75B
| $98K | ﹤0.01% |
+2,188
| New | +$98K |
|
1000
MannKind Corp
MNKD
$1.71B
| $98K | ﹤0.01% |
56,094
-3,513
| -6% | -$6.14K |
|