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 | |
|---|---|---|---|---|---|---|
376
Labcorp
LH
$23.2B
| $930K | ﹤0.01% |
4,620
+2,708
| +142% | +$545K |
|
377
BioMarin Pharmaceuticals
BMRN
$11.1B
| $929K | ﹤0.01% |
11,222
+280
| +3% | +$23.2K |
|
378
Ryder
R
$7.64B
| $929K | ﹤0.01% |
+13,074
| New | +$929K |
|
|
CS
379
DELISTED
Credit Suisse Group
CS
| $928K | ﹤0.01% |
163,695
-26,203
| -14% | -$149K |
|
380
BioCryst Pharmaceuticals
BCRX
$1.74B
| $923K | ﹤0.01% |
87,260
+21,075
| +32% | +$223K |
|
381
Invesco CurrencyShares Swiss Franc Trust
FXF
$377M
| $922K | ﹤0.01% |
9,840
+5,789
| +143% | +$542K |
|
|
SAVE
382
DELISTED
Spirit Airlines, Inc.
SAVE
| $920K | ﹤0.01% |
38,598
-47,275
| -55% | -$1.13M |
|
383
Uranium Energy
UEC
$4.96B
| $919K | ﹤0.01% |
298,438
-181,275
| -38% | -$558K |
|
384
RB Global
RBA
$21.4B
| $916K | ﹤0.01% |
+14,082
| New | +$916K |
|
385
General Dynamics
GD
$86.8B
| $913K | ﹤0.01% |
4,130
+2,130
| +107% | +$471K |
|
386
Jazz Pharmaceuticals
JAZZ
$7.86B
| $912K | ﹤0.01% |
5,852
-10,848
| -65% | -$1.69M |
|
387
Advance Auto Parts
AAP
$3.63B
| $903K | ﹤0.01% |
5,221
+2,123
| +69% | +$367K |
|
388
Coherus Oncology, Inc. Common Stock
CHRS
$150M
| $898K | ﹤0.01% |
124,118
+122,981
| +10,816% | +$890K |
|
|
EBIX
389
DELISTED
Ebix Inc
EBIX
| $898K | ﹤0.01% |
53,192
-29,167
| -35% | -$492K |
|
390
Expedia Group
EXPE
$26.6B
| $896K | ﹤0.01% |
9,452
-81,501
| -90% | -$7.73M |
|
391
Mastercard
MA
$528B
| $895K | ﹤0.01% |
2,837
-48,204
| -94% | -$15.2M |
|
392
YPF
YPF
$12.1B
| $895K | ﹤0.01% |
274,743
+112,394
| +69% | +$366K |
|
393
FerroAtlántica
GSM
$799M
| $893K | ﹤0.01% |
150,498
+20,945
| +16% | +$124K |
|
394
ProShares Ultra Euro
ULE
$7.24M
| $892K | ﹤0.01% |
80,372
+78,701
| +4,710% | +$873K |
|
395
LKQ Corp
LKQ
$8.33B
| $891K | ﹤0.01% |
+18,158
| New | +$891K |
|
|
ELME
396
Elme Communities
ELME
$1.52B
| $885K | ﹤0.01% |
41,576
-3,809
| -8% | -$81.1K |
|
397
IMAX
IMAX
$1.6B
| $884K | ﹤0.01% |
52,370
+13,873
| +36% | +$234K |
|
|
BINI
398
Bollinger Innovations, Inc. Common Stock
BINI
$3.93M
| – | – |
0
| – | -$721K |
|
399
Burford Capital
BUR
$2.92B
| $874K | ﹤0.01% |
86,665
+76,017
| +714% | +$767K |
|
400
Steris
STE
$24.2B
| $874K | ﹤0.01% |
+4,241
| New | +$874K |
|