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 |
Amazon
AMZN
|
+$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$26.1M |
| 4 |
Booking.com
BKNG
|
+$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$42.8M |
| 2 |
Amgen
AMGN
|
+$32.3M |
| 3 |
Baidu
BIDU
|
+$21.9M |
| 4 |
Micron Technology
MU
|
+$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
+$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TIVO
526
DELISTED
Tivo Inc
TIVO
| $317K | 0.01% |
15,978
+11,076
| +226% | +$220K |
|
527
Brown-Forman Class B
BF.B
$13B
| $315K | 0.01% |
9,083
+7,791
| +603% | +$270K |
|
528
Gogo Inc
GOGO
$1.39B
| $309K | 0.01% |
26,231
+5,623
| +27% | +$66.2K |
|
|
AXDX
529
DELISTED
Accelerate Diagnostics
AXDX
| $308K | 0.01% |
1,373
-2,125
| -61% | -$477K |
|
530
Hancock Whitney
HWC
$5.31B
| $308K | 0.01% |
+6,361
| New | +$308K |
|
|
NDRM
531
DELISTED
NeuroDerm Ltd. Ordinary Shares
NDRM
| $308K | 0.01% |
+7,928
| New | +$308K |
|
532
Direxion Daily Gold Miners Index Bull 2X Shares
NUGT
$854M
| $305K | 0.01% |
+1,918
| New | +$305K |
|
533
Automatic Data Processing
ADP
$120B
| $303K | 0.01% |
+2,777
| New | +$303K |
|
|
RDUS
534
DELISTED
Radius Health, Inc.
RDUS
| $302K | 0.01% |
7,841
+5,730
| +271% | +$221K |
|
535
Myriad Genetics
MYGN
$649M
| $298K | 0.01% |
8,244
-35,695
| -81% | -$1.29M |
|
536
Olin
OLN
$2.91B
| $297K | 0.01% |
+8,698
| New | +$297K |
|
537
SPDR S&P Dividend ETF
SDY
$20.3B
| $297K | 0.01% |
+3,256
| New | +$297K |
|
|
NSM
538
DELISTED
Nationstar Mortgage Holdings
NSM
| $297K | 0.01% |
15,995
+2,664
| +20% | +$49.5K |
|
539
LSB Industries
LXU
$562M
| $294K | 0.01% |
+48,239
| New | +$294K |
|
540
Tronox
TROX
$755M
| $294K | 0.01% |
13,962
+3,341
| +31% | +$70.4K |
|
|
LNCE
541
DELISTED
Snyders-Lance, Inc.
LNCE
| $294K | 0.01% |
7,729
+6,072
| +366% | +$231K |
|
|
REN
542
DELISTED
Resolute Energy Corporaton
REN
| $293K | 0.01% |
9,876
-19,301
| -66% | -$573K |
|
543
Adecoagro
AGRO
$794M
| $292K | 0.01% |
27,110
+12,595
| +87% | +$136K |
|
544
Abeona Therapeutics
ABEO
$350M
| $292K | 0.01% |
685
+488
| +248% | +$208K |
|
|
UFS
545
DELISTED
DOMTAR CORPORATION (New)
UFS
| $291K | 0.01% |
6,722
-1,103
| -14% | -$47.8K |
|
|
TRCO
546
DELISTED
TRIBUNE MEDIA COMPANY CLASS A
TRCO
| $291K | 0.01% |
7,124
-4,124
| -37% | -$168K |
|
547
Pure Storage
PSTG
$25.9B
| $290K | 0.01% |
18,144
-9,040
| -33% | -$144K |
|
|
POT
548
DELISTED
Potash Corp Of Saskatchewan
POT
| $290K | 0.01% |
15,123
+12,027
| +388% | +$231K |
|
549
Vital Energy
VTLE
$606M
| $282K | 0.01% |
1,094
+846
| +341% | +$218K |
|
|
SCG
550
DELISTED
Scana
SCG
| $282K | 0.01% |
+5,816
| New | +$282K |
|