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 |
NVIDIA
NVDA
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
FirstEnergy
FE
$25B
| $668K | ﹤0.01% |
15,623
+7,638
| +96% | +$327K |
|
352
Madrigal Pharmaceuticals
MDGL
$10.1B
| $666K | ﹤0.01% |
6,359
+2,557
| +67% | +$268K |
|
353
Clearway Energy Class C
CWEN
$3.34B
| $664K | ﹤0.01% |
+39,396
| New | +$664K |
|
|
PRAH
354
DELISTED
PRA Health Sciences, Inc.
PRAH
| $663K | ﹤0.01% |
+6,691
| New | +$663K |
|
355
Aptiv
APTV
$17.9B
| $661K | ﹤0.01% |
8,183
+3,461
| +73% | +$280K |
|
356
SPDR S&P Homebuilders ETF
XHB
$1.92B
| $656K | ﹤0.01% |
15,753
-43,366
| -73% | -$1.81M |
|
|
BBBY
357
Bed Bath & Beyond, Inc.
BBBY
$638M
| $653K | ﹤0.01% |
58,099
+22,375
| +63% | +$251K |
|
|
FOCS
358
DELISTED
Focus Financial Partners Inc. Class A
FOCS
| $651K | ﹤0.01% |
+23,862
| New | +$651K |
|
359
Voyager Therapeutics
VYGR
$236M
| $650K | ﹤0.01% |
23,897
+7,881
| +49% | +$214K |
|
360
RBC Bearings
RBC
$12.1B
| $642K | ﹤0.01% |
3,851
+3,660
| +1,916% | +$610K |
|
361
Direxion Daily S&P Biotech Bear 3X Shares
LABD
$70.4M
| $641K | ﹤0.01% |
1,780
+763
| +75% | +$275K |
|
362
Tredegar Corp
TG
$274M
| $639K | ﹤0.01% |
38,456
+25,387
| +194% | +$422K |
|
363
Synovus
SNV
$7.2B
| $635K | ﹤0.01% |
18,161
+7,721
| +74% | +$270K |
|
364
Arrow Electronics
ARW
$6.49B
| $633K | ﹤0.01% |
+8,886
| New | +$633K |
|
|
FTCH
365
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $633K | ﹤0.01% |
30,433
+3,048
| +11% | +$63.4K |
|
366
Ally Financial
ALLY
$12.7B
| $629K | ﹤0.01% |
+20,310
| New | +$629K |
|
367
Tapestry
TPR
$21.9B
| $627K | ﹤0.01% |
19,773
-4,140
| -17% | -$131K |
|
368
Mitek Systems
MITK
$456M
| $623K | ﹤0.01% |
62,680
+25,267
| +68% | +$251K |
|
369
Gen Digital
GEN
$18.4B
| $619K | ﹤0.01% |
+28,480
| New | +$619K |
|
370
Urban Outfitters
URBN
$6.55B
| $617K | ﹤0.01% |
+27,157
| New | +$617K |
|
371
Freeport-McMoran
FCX
$63B
| $616K | ﹤0.01% |
53,086
+12,977
| +32% | +$151K |
|
|
GMS
372
DELISTED
GMS Inc
GMS
| $616K | ﹤0.01% |
28,011
+1,422
| +5% | +$31.3K |
|
373
Energizer
ENR
$1.96B
| $615K | ﹤0.01% |
15,928
+12,845
| +417% | +$496K |
|
|
ARRY
374
DELISTED
Array Biopharma Inc
ARRY
| $605K | ﹤0.01% |
+13,080
| New | +$605K |
|
|
WW
375
DELISTED
WW International
WW
| $600K | ﹤0.01% |
+31,464
| New | +$600K |
|