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
|
+$258M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$75.7M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$67.2M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$59.4M |
| 5 |
Intel
INTC
|
+$45.8M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$56.8M |
| 2 |
iShares Silver Trust
SLV
|
+$45.9M |
| 3 |
Ford
F
|
+$32.5M |
| 4 |
Exxon Mobil
XOM
|
+$20.4M |
| 5 |
Caterpillar
CAT
|
+$19.2M |
Sector Composition
| 1 | Technology | 26.01% |
| 2 | Consumer Discretionary | 9.82% |
| 3 | Communication Services | 9.82% |
| 4 | Financials | 8.68% |
| 5 | Healthcare | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
NOV
NOV
$4.92B
| $869K | ﹤0.01% |
51,418
+14,399
| +39% | +$243K |
|
|
AUY
402
DELISTED
Yamana Gold, Inc.
AUY
| $864K | ﹤0.01% |
186,006
-600,428
| -76% | -$2.79M |
|
|
BPT
403
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $851K | ﹤0.01% |
41,576
-33,367
| -45% | -$683K |
|
404
Valvoline
VVV
$5.08B
| $850K | ﹤0.01% |
29,512
+6,911
| +31% | +$199K |
|
405
H&R Block
HRB
$6.97B
| $848K | ﹤0.01% |
24,015
+15,123
| +170% | +$534K |
|
|
CHNG
406
DELISTED
Change Healthcare Inc. Common Stock
CHNG
| $845K | ﹤0.01% |
36,651
+4,522
| +14% | +$104K |
|
407
First Horizon
FHN
$11.3B
| $842K | ﹤0.01% |
38,560
+11,104
| +40% | +$242K |
|
408
Guardant Health
GH
$7.5B
| $841K | ﹤0.01% |
20,866
+2,273
| +12% | +$91.6K |
|
409
Northern Oil and Gas
NOG
$2.41B
| $838K | ﹤0.01% |
+33,210
| New | +$838K |
|
410
Banco Santander
SAN
$145B
| $832K | ﹤0.01% |
297,232
+51,312
| +21% | +$144K |
|
|
DISH
411
DELISTED
DISH Network Corp.
DISH
| $831K | ﹤0.01% |
46,366
-51,692
| -53% | -$926K |
|
|
CUTR
412
DELISTED
Cutera, Inc.
CUTR
| $830K | ﹤0.01% |
22,155
-14,692
| -40% | -$550K |
|
|
VRAY
413
DELISTED
ViewRay, Inc.
VRAY
| $815K | ﹤0.01% |
307,757
+247,478
| +411% | +$655K |
|
414
Euronet Worldwide
EEFT
$3.71B
| $814K | ﹤0.01% |
8,095
+6,831
| +540% | +$687K |
|
|
SWN
415
DELISTED
Southwestern Energy Company
SWN
| $807K | ﹤0.01% |
129,200
-43,158
| -25% | -$270K |
|
416
Omnicom Group
OMC
$15.3B
| $804K | ﹤0.01% |
+12,653
| New | +$804K |
|
417
Gerdau
GGB
$6.31B
| $803K | ﹤0.01% |
235,911
+50,106
| +27% | +$171K |
|
418
DocGo
DCGO
$154M
| $801K | ﹤0.01% |
112,199
+99,586
| +790% | +$711K |
|
419
O'Reilly Automotive
ORLY
$90.3B
| $801K | ﹤0.01% |
19,035
-615
| -3% | -$25.9K |
|
420
MBIA
MBI
$386M
| $800K | ﹤0.01% |
64,804
-38,994
| -38% | -$481K |
|
421
CyberArk
CYBR
$23.6B
| $798K | ﹤0.01% |
6,241
-3,528
| -36% | -$451K |
|
422
Intrepid Potash
IPI
$390M
| $792K | ﹤0.01% |
+17,490
| New | +$792K |
|
423
Invesco NASDAQ 100 ETF
QQQM
$59.6B
| $789K | ﹤0.01% |
+6,850
| New | +$789K |
|
424
Bumble
BMBL
$703M
| $785K | ﹤0.01% |
27,917
-14,035
| -33% | -$395K |
|
425
Zillow
ZG
$21B
| $785K | ﹤0.01% |
24,709
-3,867
| -14% | -$123K |
|