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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
876
Gold Resource Corp
GORO
$114M
| $182K | ﹤0.01% |
53,423
+41,895
| +363% | +$143K |
|
|
TBIO
877
DELISTED
Translate Bio, Inc. Common Stock
TBIO
| $182K | ﹤0.01% |
13,439
-8,848
| -40% | -$120K |
|
878
Aegon
AEG
$12.1B
| $181K | ﹤0.01% |
76,743
+6,890
| +10% | +$16.3K |
|
879
Visteon
VC
$3.5B
| $181K | ﹤0.01% |
2,623
+2,562
| +4,200% | +$177K |
|
880
Clean Energy Fuels
CLNE
$555M
| $180K | ﹤0.01% |
72,959
+43,017
| +144% | +$106K |
|
881
Merit Medical Systems
MMSI
$5.34B
| $180K | ﹤0.01% |
+4,139
| New | +$180K |
|
882
Navient
NAVI
$1.31B
| $180K | ﹤0.01% |
21,375
-3,719
| -15% | -$31.3K |
|
883
Pinnacle Financial Partners
PNFP
$7.59B
| $180K | ﹤0.01% |
+5,067
| New | +$180K |
|
884
Ascendis Pharma
ASND
$12B
| $179K | ﹤0.01% |
1,163
-844
| -42% | -$130K |
|
885
MaxLinear
MXL
$1.4B
| $179K | ﹤0.01% |
7,711
-60,941
| -89% | -$1.41M |
|
886
SITE Centers
SITC
$474M
| $179K | ﹤0.01% |
31,998
+20,065
| +168% | +$112K |
|
887
BioSig Technologies, Inc. Common Stock
BSGM
$215M
| $178K | ﹤0.01% |
3,628
+1,172
| +48% | +$57.5K |
|
888
Caleres
CAL
$532M
| $178K | ﹤0.01% |
18,710
+15,350
| +457% | +$146K |
|
889
Oppenheimer Holdings
OPY
$815M
| $178K | ﹤0.01% |
7,982
-3,173
| -28% | -$70.8K |
|
890
Royal Gold
RGLD
$12.5B
| $178K | ﹤0.01% |
1,485
-684
| -32% | -$82K |
|
|
DBD
891
DELISTED
Diebold Nixdorf Incorporated
DBD
| $178K | ﹤0.01% |
23,326
+11,596
| +99% | +$88.5K |
|
892
Canadian Natural Resources
CNQ
$65B
| $177K | ﹤0.01% |
22,689
+15,816
| +230% | +$123K |
|
|
JBGS
893
JBG SMITH
JBGS
$1.44B
| $177K | ﹤0.01% |
+6,655
| New | +$177K |
|
|
CTLT
894
DELISTED
CATALENT, INC.
CTLT
| $177K | ﹤0.01% |
+2,069
| New | +$177K |
|
895
Teekay Tankers
TNK
$1.79B
| $176K | ﹤0.01% |
16,254
+11,937
| +277% | +$129K |
|
896
Cerus
CERS
$240M
| $175K | ﹤0.01% |
28,114
+12,429
| +79% | +$77.4K |
|
897
Amkor Technology
AMKR
$6.27B
| $174K | ﹤0.01% |
+15,607
| New | +$174K |
|
898
iShares US Telecommunications ETF
IYZ
$614M
| $173K | ﹤0.01% |
+6,394
| New | +$173K |
|
|
AVTA
899
DELISTED
Avantax, Inc. Common Stock
AVTA
| $173K | ﹤0.01% |
18,367
+16,890
| +1,144% | +$159K |
|
900
Galicia Financial Group
GGAL
$5.02B
| $172K | ﹤0.01% |
23,821
-31,490
| -57% | -$227K |
|