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
|
$85.4M |
| 2 |
SPDR Gold Trust
GLD
|
$75.9M |
| 3 |
NVIDIA
NVDA
|
$42.6M |
| 4 |
Netflix
NFLX
|
$41.1M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
$40.5M |
Top Sells
| 1 |
Apple
AAPL
|
$65.7M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
$25.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$24.4M |
| 4 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$24.3M |
| 5 |
Broadcom
AVGO
|
$21.3M |
Sector Composition
| 1 | Technology | 15.2% |
| 2 | Consumer Discretionary | 14.52% |
| 3 | Communication Services | 10.57% |
| 4 | Healthcare | 8.15% |
| 5 | Financials | 7.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SA
476
Seabridge Gold
SA
$1.81B
| $472K | ﹤0.01% |
26,947
-16,248
| -38% | -$285K |
|
477
Direxion Daily S&P Biotech Bear 3X Shares
LABD
$56.8M
| $471K | ﹤0.01% |
+6,798
| New | +$471K |
|
478
Direxion Daily Homebuilders & Supplies Bull 3X Shares
NAIL
$676M
| $471K | ﹤0.01% |
17,532
+14,476
| +474% | +$389K |
|
479
Matador Resources
MTDR
$6.01B
| $468K | ﹤0.01% |
55,103
+40,690
| +282% | +$346K |
|
480
Aurinia Pharmaceuticals
AUPH
$1.63B
| $467K | ﹤0.01% |
28,767
+22,530
| +361% | +$366K |
|
481
SSR Mining
SSRM
$4.28B
| $458K | ﹤0.01% |
+21,477
| New | +$458K |
|
482
ProShares Short Dow30
DOG
$120M
| $457K | ﹤0.01% |
+9,554
| New | +$457K |
|
483
WisdomTree Japan Hedged Equity Fund
DXJ
$3.78B
| $457K | ﹤0.01% |
9,729
-3,173
| -25% | -$149K |
|
|
MODN
484
DELISTED
MODEL N, INC.
MODN
| $456K | ﹤0.01% |
13,136
+12,652
| +2,614% | +$439K |
|
485
Vistra
VST
$63.7B
| $454K | ﹤0.01% |
24,399
-6,488
| -21% | -$121K |
|
486
Dayforce
DAY
$10.9B
| $451K | ﹤0.01% |
+5,690
| New | +$451K |
|
|
DOYU
487
DouYu International Holdings
DOYU
$234M
| $450K | ﹤0.01% |
3,906
+1,720
| +79% | +$198K |
|
488
Clarivate
CLVT
$2.96B
| $448K | ﹤0.01% |
+20,076
| New | +$448K |
|
489
Regenxbio
RGNX
$490M
| $447K | ﹤0.01% |
12,150
-1,415
| -10% | -$52.1K |
|
490
ProShares Ultra Health Care
RXL
$66.8M
| $447K | ﹤0.01% |
15,240
+8,820
| +137% | +$259K |
|
|
CNH
491
CNH Industrial
CNH
$14.3B
| $447K | ﹤0.01% |
+73,082
| New | +$447K |
|
492
Elanco Animal Health
ELAN
$9.16B
| $445K | ﹤0.01% |
20,758
-40,051
| -66% | -$859K |
|
493
Sally Beauty Holdings
SBH
$1.44B
| $445K | ﹤0.01% |
35,574
+33,011
| +1,288% | +$413K |
|
494
Honda
HMC
$44.8B
| $443K | ﹤0.01% |
17,360
+12,859
| +286% | +$328K |
|
495
IAC Inc
IAC
$2.98B
| $443K | ﹤0.01% |
7,666
-119,294
| -94% | -$6.89M |
|
496
Sabesp
SBS
$15.8B
| $441K | ﹤0.01% |
42,042
-5,925
| -12% | -$62.2K |
|
497
United States Natural Gas Fund
UNG
$615M
| $441K | ﹤0.01% |
10,763
-50,266
| -82% | -$2.06M |
|
498
ProShares Ultra Bloomberg Crude Oil
UCO
$356M
| $440K | ﹤0.01% |
+61,500
| New | +$440K |
|
499
FibroGen
FGEN
$48.9M
| $439K | ﹤0.01% |
434
-924
| -68% | -$935K |
|
500
Perrigo
PRGO
$3.12B
| $439K | ﹤0.01% |
7,950
-11,862
| -60% | -$655K |
|