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 | |
|---|---|---|---|---|---|---|
|
SDRL
451
DELISTED
Seadrill Limited Common Stock
SDRL
| $427K | ﹤0.01% |
102,733
+62,339
| +154% | +$259K |
|
452
Lyft
LYFT
$7.87B
| $423K | ﹤0.01% |
+6,452
| New | +$423K |
|
|
NVRO
453
DELISTED
NEVRO CORP.
NVRO
| $421K | ﹤0.01% |
6,508
+3,224
| +98% | +$209K |
|
454
Nexstar Media Group
NXST
$5.98B
| $420K | ﹤0.01% |
+4,160
| New | +$420K |
|
455
PDF Solutions
PDFS
$763M
| $420K | ﹤0.01% |
32,023
-30,102
| -48% | -$395K |
|
456
McCormick & Company Non-Voting
MKC
$18.4B
| $419K | ﹤0.01% |
+5,416
| New | +$419K |
|
457
Embraer
ERJ
$10.9B
| $418K | ﹤0.01% |
20,813
+6,099
| +41% | +$122K |
|
458
TripAdvisor
TRIP
$2.06B
| $418K | ﹤0.01% |
9,043
-28,074
| -76% | -$1.3M |
|
|
BEAT
459
DELISTED
BioTelemetry, Inc.
BEAT
| $417K | ﹤0.01% |
+8,666
| New | +$417K |
|
460
Graphic Packaging
GPK
$6.14B
| $416K | ﹤0.01% |
+29,761
| New | +$416K |
|
|
NBL
461
DELISTED
Noble Energy, Inc.
NBL
| $414K | ﹤0.01% |
+18,502
| New | +$414K |
|
462
iShares MSCI USA Momentum Factor ETF
MTUM
$18.9B
| $413K | ﹤0.01% |
3,486
+3,461
| +13,844% | +$410K |
|
|
LTHM
463
DELISTED
Livent Corporation
LTHM
| $409K | ﹤0.01% |
+59,240
| New | +$409K |
|
|
SAGE
464
DELISTED
Sage Therapeutics
SAGE
| $406K | ﹤0.01% |
+2,218
| New | +$406K |
|
465
Dropbox
DBX
$8.29B
| $405K | ﹤0.01% |
16,179
-13,980
| -46% | -$350K |
|
466
Enova International
ENVA
$2.88B
| $404K | ﹤0.01% |
+17,555
| New | +$404K |
|
467
Globe Life
GL
$11.3B
| $402K | ﹤0.01% |
+4,496
| New | +$402K |
|
468
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$92M
| $401K | ﹤0.01% |
5,145
-2,185
| -30% | -$170K |
|
|
MXIM
469
DELISTED
Maxim Integrated Products
MXIM
| $401K | ﹤0.01% |
+6,706
| New | +$401K |
|
470
Ocular Therapeutix
OCUL
$2.27B
| $398K | ﹤0.01% |
+90,518
| New | +$398K |
|
|
MIK
471
DELISTED
Michaels Stores, Inc
MIK
| $398K | ﹤0.01% |
45,822
+26,995
| +143% | +$234K |
|
472
Knight Transportation
KNX
$6.76B
| $397K | ﹤0.01% |
12,096
-18,597
| -61% | -$610K |
|
|
WBC
473
DELISTED
WABCO HOLDINGS INC.
WBC
| $397K | ﹤0.01% |
3,000
+2,500
| +500% | +$331K |
|
474
Builders FirstSource
BLDR
$15.5B
| $396K | ﹤0.01% |
23,498
-4,000
| -15% | -$67.4K |
|
475
Core Laboratories
CLB
$577M
| $394K | ﹤0.01% |
7,554
+5,132
| +212% | +$268K |
|