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 |
Invesco QQQ Trust
QQQ
|
$92M |
| 2 |
Walt Disney
DIS
|
$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
$12.8M |
| 4 |
Baidu
BIDU
|
$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
$61.4M |
| 2 |
Amazon
AMZN
|
$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$35.5M |
| 4 |
Apple
AAPL
|
$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.02% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
FDC
351
DELISTED
First Data Corporation
FDC
| $601K | ﹤0.01% |
22,905
-49,339
| -68% | -$1.29M |
|
352
OFG Bancorp
OFG
$1.99B
| $600K | ﹤0.01% |
+30,357
| New | +$600K |
|
353
Vail Resorts
MTN
$5.87B
| $593K | ﹤0.01% |
+2,729
| New | +$593K |
|
354
Indaptus Therapeutics
INDP
$3.65M
| $591K | ﹤0.01% |
36
+16
| +80% | +$263K |
|
355
Wolfspeed
WOLF
$196M
| $591K | ﹤0.01% |
10,329
-11,556
| -53% | -$661K |
|
|
PYX
356
DELISTED
Pyxus International, Inc.
PYX
| $591K | ﹤0.01% |
24,746
+22,519
| +1,011% | +$538K |
|
357
NRG Energy
NRG
$28.6B
| $585K | ﹤0.01% |
+13,794
| New | +$585K |
|
358
Solid Biosciences
SLDB
$428M
| $585K | ﹤0.01% |
4,242
+3,676
| +649% | +$507K |
|
|
BERY
359
DELISTED
Berry Global Group, Inc.
BERY
| $585K | ﹤0.01% |
11,834
-3,716
| -24% | -$184K |
|
360
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$86.4M
| $584K | ﹤0.01% |
7,330
+6,232
| +568% | +$497K |
|
361
BP
BP
$87.4B
| $582K | ﹤0.01% |
13,554
-16,618
| -55% | -$714K |
|
362
Infosys
INFY
$67.9B
| $581K | ﹤0.01% |
+53,207
| New | +$581K |
|
|
LM
363
DELISTED
Legg Mason, Inc.
LM
| $581K | ﹤0.01% |
21,235
-28,984
| -58% | -$793K |
|
|
SAFM
364
DELISTED
Sanderson Farms Inc
SAFM
| $579K | ﹤0.01% |
4,399
+3,384
| +333% | +$445K |
|
365
Harley-Davidson
HOG
$3.67B
| $577K | ﹤0.01% |
+16,194
| New | +$577K |
|
366
CACI
CACI
$10.4B
| $568K | ﹤0.01% |
+3,124
| New | +$568K |
|
367
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$443M
| $564K | ﹤0.01% |
2,707
+506
| +23% | +$105K |
|
368
Myriad Genetics
MYGN
$615M
| $563K | ﹤0.01% |
+16,964
| New | +$563K |
|
369
Shopify
SHOP
$191B
| $563K | ﹤0.01% |
27,280
-80,690
| -75% | -$1.67M |
|
|
DCP
370
DELISTED
DCP Midstream, LP
DCP
| $563K | ﹤0.01% |
17,047
-1,447
| -8% | -$47.8K |
|
|
MIME
371
DELISTED
Mimecast Limited
MIME
| $562K | ﹤0.01% |
11,887
+11,673
| +5,455% | +$552K |
|
372
JetBlue
JBLU
$1.85B
| $557K | ﹤0.01% |
34,102
-27,988
| -45% | -$457K |
|
373
StoneX
SNEX
$5.37B
| $557K | ﹤0.01% |
32,382
+19,325
| +148% | +$332K |
|
374
CF Industries
CF
$13.7B
| $549K | ﹤0.01% |
13,432
+2,806
| +26% | +$115K |
|
|
ESV
375
DELISTED
Ensco Rowan plc
ESV
| $546K | ﹤0.01% |
34,785
-11,771
| -25% | -$185K |
|