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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
Sangamo Therapeutics
SGMO
$157M
| $464K | ﹤0.01% |
51,289
+630
| +1% | +$5.7K |
|
402
Western Union
WU
$2.79B
| $464K | ﹤0.01% |
+20,060
| New | +$464K |
|
403
New Oriental
EDU
$8.51B
| $463K | ﹤0.01% |
+4,182
| New | +$463K |
|
404
National Health Investors
NHI
$3.73B
| $463K | ﹤0.01% |
5,620
-298
| -5% | -$24.6K |
|
405
Viking Therapeutics
VKTX
$2.84B
| $463K | ﹤0.01% |
67,411
+55,818
| +481% | +$383K |
|
|
MNTV
406
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $463K | ﹤0.01% |
27,133
+22,568
| +494% | +$385K |
|
407
Sabesp
SBS
$15.6B
| $458K | ﹤0.01% |
+38,605
| New | +$458K |
|
408
Qorvo
QRVO
$8.53B
| $457K | ﹤0.01% |
6,177
-46,585
| -88% | -$3.45M |
|
|
409
iShares 20+ Year Treasury Bond ETF
TLT
$49.2B
| $457K | ﹤0.01% |
3,200
-102,524
| -97% | -$14.6M |
|
410
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$163M
| $456K | ﹤0.01% |
22,519
-10,049
| -31% | -$203K |
|
411
CMS Energy
CMS
$21.2B
| $456K | ﹤0.01% |
+7,135
| New | +$456K |
|
412
Carvana
CVNA
$51.8B
| $455K | ﹤0.01% |
6,908
-19,883
| -74% | -$1.31M |
|
413
Icon
ICLR
$13.1B
| $455K | ﹤0.01% |
+3,089
| New | +$455K |
|
414
W.W. Grainger
GWW
$47.6B
| $453K | ﹤0.01% |
1,526
-4,512
| -75% | -$1.34M |
|
415
Viavi Solutions
VIAV
$2.61B
| $452K | ﹤0.01% |
32,286
+19,582
| +154% | +$274K |
|
|
ITCI
416
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $449K | ﹤0.01% |
+60,211
| New | +$449K |
|
417
Harrow
HROW
$1.45B
| $449K | ﹤0.01% |
+80,013
| New | +$449K |
|
418
WisdomTree
WT
$2.01B
| $449K | ﹤0.01% |
86,009
+51,274
| +148% | +$268K |
|
419
ProShares UltraShort MSCI Brazil Capped
BZQ
$5.58M
| $448K | ﹤0.01% |
4,568
+1,727
| +61% | +$169K |
|
|
DFS
420
DELISTED
Discover Financial Services
DFS
| $448K | ﹤0.01% |
+5,527
| New | +$448K |
|
421
Harmony Gold Mining
HMY
$9.16B
| $448K | ﹤0.01% |
157,817
+138,627
| +722% | +$394K |
|
|
LK
422
DELISTED
Luckin Coffee Inc. American Depositary Shares
LK
| $444K | ﹤0.01% |
+23,378
| New | +$444K |
|
423
Banco Bradesco
BBD
$33.1B
| $443K | ﹤0.01% |
72,590
+30,935
| +74% | +$189K |
|
424
Madison Square Garden
MSGS
$4.96B
| $439K | ﹤0.01% |
+2,340
| New | +$439K |
|
425
Bilibili
BILI
$9.96B
| $438K | ﹤0.01% |
31,040
-26,811
| -46% | -$378K |
|