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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1351
Conduent
CNDT
$436M
| $16K | ﹤0.01% |
+991
| New | +$16K |
|
1352
Dawson Geophysical
DWSN
$49.4M
| $16K | ﹤0.01% |
3,051
+2,657
| +674% | +$13.9K |
|
1353
Hallador Energy
HNRG
$803M
| $16K | ﹤0.01% |
2,080
+89
| +4% | +$685 |
|
1354
IAMGOLD
IAG
$6.33B
| $16K | ﹤0.01% |
4,015
-1,277
| -24% | -$5.09K |
|
1355
Permian Resources
PR
$9.41B
| $16K | ﹤0.01% |
+913
| New | +$16K |
|
1356
Primoris Services
PRIM
$6.67B
| $16K | ﹤0.01% |
700
-331
| -32% | -$7.57K |
|
1357
Pixelworks
PXLW
$59.2M
| $16K | ﹤0.01% |
287
+231
| +413% | +$12.9K |
|
1358
Tennant Co
TNC
$1.5B
| $16K | ﹤0.01% |
+229
| New | +$16K |
|
1359
Watsco
WSO
$15.7B
| $16K | ﹤0.01% |
+114
| New | +$16K |
|
|
BFX
1360
DELISTED
BowFlex Inc.
BFX
| $16K | ﹤0.01% |
886
+740
| +507% | +$13.4K |
|
|
SYKE
1361
DELISTED
SYKES Enterprises Inc
SYKE
| $16K | ﹤0.01% |
+568
| New | +$16K |
|
|
TLRD
1362
DELISTED
Tailored Brands, Inc.
TLRD
| $16K | ﹤0.01% |
+1,073
| New | +$16K |
|
|
CRCM
1363
DELISTED
CARE.COM, INC.
CRCM
| $16K | ﹤0.01% |
+1,312
| New | +$16K |
|
|
XRM
1364
DELISTED
Xerium Technologies Inc (new)
XRM
| $16K | ﹤0.01% |
2,588
+1,743
| +206% | +$10.8K |
|
1365
Freshpet
FRPT
$2.56B
| $15K | ﹤0.01% |
+1,387
| New | +$15K |
|
1366
Gannett
GCI
$642M
| $15K | ﹤0.01% |
+1,109
| New | +$15K |
|
1367
Ooma
OOMA
$351M
| $15K | ﹤0.01% |
1,588
+1,472
| +1,269% | +$13.9K |
|
1368
Plexus
PLXS
$3.71B
| $15K | ﹤0.01% |
+267
| New | +$15K |
|
1369
Rocket Pharmaceuticals
RCKT
$351M
| $15K | ﹤0.01% |
1,891
-8,200
| -81% | -$65K |
|
1370
Rockwell Automation
ROK
$39B
| $15K | ﹤0.01% |
102
-4,595
| -98% | -$676K |
|
1371
Sanmina
SANM
$6.35B
| $15K | ﹤0.01% |
+391
| New | +$15K |
|
|
WSR
1372
Whitestone REIT
WSR
$652M
| $15K | ﹤0.01% |
+1,116
| New | +$15K |
|
|
AAV
1373
DELISTED
Advantage Oil & Gas Ltd
AAV
| $15K | ﹤0.01% |
2,322
+2,083
| +872% | +$13.5K |
|
|
WBMD
1374
DELISTED
WebMD Health Corp.
WBMD
| $15K | ﹤0.01% |
+300
| New | +$15K |
|
1375
Andersons Inc
ANDE
$1.32B
| $14K | ﹤0.01% |
376
-1,366
| -78% | -$50.9K |
|