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 | |
|---|---|---|---|---|---|---|
651
Meritage Homes
MTH
$5.59B
| $346K | ﹤0.01% |
+6,286
| New | +$346K |
|
|
ACIA
652
DELISTED
Acacia Communications, Inc. Common Stock
ACIA
| $345K | ﹤0.01% |
5,119
-358
| -7% | -$24.1K |
|
|
OTRK
653
DELISTED
Ontrak
OTRK
| $344K | ﹤0.01% |
64
+62
| +3,100% | +$333K |
|
|
ZUO
654
DELISTED
Zuora, Inc.
ZUO
| $344K | ﹤0.01% |
33,360
-15,546
| -32% | -$160K |
|
655
ProShares UltraShort Dow 30
DXD
$53.1M
| $343K | ﹤0.01% |
4,385
+1,701
| +63% | +$133K |
|
656
Veeco
VECO
$1.52B
| $343K | ﹤0.01% |
29,414
+1,652
| +6% | +$19.3K |
|
657
Xylem
XYL
$33.5B
| $342K | ﹤0.01% |
+4,076
| New | +$342K |
|
658
The Mosaic Company
MOS
$10.6B
| $341K | ﹤0.01% |
18,717
-113,433
| -86% | -$2.07M |
|
659
Regal Rexnord
RRX
$9.39B
| $341K | ﹤0.01% |
3,637
+2,650
| +268% | +$248K |
|
|
NGD
660
New Gold Inc
NGD
$5.14B
| $340K | ﹤0.01% |
200,179
+43,517
| +28% | +$73.9K |
|
661
Churchill Downs
CHDN
$6.77B
| $339K | ﹤0.01% |
4,140
+3,982
| +2,520% | +$326K |
|
662
Fortuna Silver Mines
FSM
$2.42B
| $338K | ﹤0.01% |
53,219
+13,317
| +33% | +$84.6K |
|
663
Vanguard Growth ETF
VUG
$188B
| $336K | ﹤0.01% |
+1,479
| New | +$336K |
|
664
ProShares Short S&P500
SH
$1.23B
| $335K | ﹤0.01% |
+4,131
| New | +$335K |
|
|
ACC
665
DELISTED
American Campus Communities, Inc.
ACC
| $333K | ﹤0.01% |
+9,547
| New | +$333K |
|
666
Comstock Resources
CRK
$4.65B
| $332K | ﹤0.01% |
75,887
+49,029
| +183% | +$214K |
|
667
Vulcan Materials
VMC
$38.9B
| $329K | ﹤0.01% |
+2,433
| New | +$329K |
|
668
Avnet
AVT
$4.5B
| $328K | ﹤0.01% |
12,699
+7,357
| +138% | +$190K |
|
669
Avis
CAR
$5.48B
| $328K | ﹤0.01% |
12,469
+5,469
| +78% | +$144K |
|
670
Vanguard Financials ETF
VFH
$12.8B
| $328K | ﹤0.01% |
+5,609
| New | +$328K |
|
|
RUTH
671
DELISTED
Ruth's Hospitality Group, Inc.
RUTH
| $327K | ﹤0.01% |
29,625
-4,847
| -14% | -$53.5K |
|
|
TRIL
672
DELISTED
Trillium Therapeutics Inc.
TRIL
| $326K | ﹤0.01% |
22,962
-36,141
| -61% | -$513K |
|
673
Lamb Weston
LW
$7.79B
| $325K | ﹤0.01% |
+4,907
| New | +$325K |
|
674
Skillz
SKLZ
$110M
| $325K | ﹤0.01% |
+1,336
| New | +$325K |
|
|
NAK
675
Northern Dynasty Minerals
NAK
$450M
| $322K | ﹤0.01% |
328,728
+48,825
| +17% | +$47.8K |
|