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 | |
|---|---|---|---|---|---|---|
426
Macerich
MAC
$4.74B
| $560K | ﹤0.01% |
62,442
+62,342
| +62,342% | +$559K |
|
427
Ecolab
ECL
$77.6B
| $558K | ﹤0.01% |
+2,806
| New | +$558K |
|
428
NCR Voyix
VYX
$1.84B
| $558K | ﹤0.01% |
52,559
+45,933
| +693% | +$488K |
|
429
Direxion Daily Semiconductor Bear 3X Shares
SOXS
$1.43B
| $552K | ﹤0.01% |
87
+42
| +93% | +$266K |
|
430
Watsco
WSO
$16.6B
| $551K | ﹤0.01% |
3,106
+1,965
| +172% | +$349K |
|
431
iShares MBS ETF
MBB
$41.3B
| $545K | ﹤0.01% |
+4,932
| New | +$545K |
|
432
CRH
CRH
$75.4B
| $542K | ﹤0.01% |
15,818
+4,177
| +36% | +$143K |
|
433
Equity Residential
EQR
$25.5B
| $541K | ﹤0.01% |
+9,206
| New | +$541K |
|
|
SIX
434
DELISTED
Six Flags Entertainment Corp.
SIX
| $540K | ﹤0.01% |
28,121
-7,766
| -22% | -$149K |
|
435
Galicia Financial Group
GGAL
$6.44B
| $536K | ﹤0.01% |
55,311
+25,168
| +83% | +$244K |
|
436
ProShares Ultra Russell2000
UWM
$369M
| $536K | ﹤0.01% |
22,070
-5,190
| -19% | -$126K |
|
437
Waters Corp
WAT
$18.2B
| $534K | ﹤0.01% |
+2,963
| New | +$534K |
|
438
Itaú Unibanco
ITUB
$76.6B
| $533K | ﹤0.01% |
+151,769
| New | +$533K |
|
439
Bank OZK
OZK
$5.9B
| $533K | ﹤0.01% |
22,731
+7,938
| +54% | +$186K |
|
440
PagerDuty
PD
$1.54B
| $531K | ﹤0.01% |
18,554
+11,157
| +151% | +$319K |
|
|
DNKN
441
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $531K | ﹤0.01% |
+8,143
| New | +$531K |
|
442
Spirit AeroSystems
SPR
$4.8B
| $529K | ﹤0.01% |
22,130
-5,265
| -19% | -$126K |
|
|
PE
443
DELISTED
PARSLEY ENERGY INC
PE
| $528K | ﹤0.01% |
49,483
-22,607
| -31% | -$241K |
|
444
Intellia Therapeutics
NTLA
$1.29B
| $527K | ﹤0.01% |
25,112
-3
| -0% | -$63 |
|
445
Copa Holdings
CPA
$4.85B
| $524K | ﹤0.01% |
10,375
-2,669
| -20% | -$135K |
|
446
First Trust Natural Gas ETF
FCG
$329M
| $521K | ﹤0.01% |
69,670
-27,310
| -28% | -$204K |
|
447
Ambev
ABEV
$34.8B
| $519K | ﹤0.01% |
196,769
+143,362
| +268% | +$378K |
|
448
Vital Energy
VTLE
$635M
| $519K | ﹤0.01% |
+37,475
| New | +$519K |
|
449
Amazon
AMZN
$2.48T
| $518K | ﹤0.01% |
3,760
-4,040
| -52% | -$557K |
|
450
National Vision
EYE
$1.86B
| $517K | ﹤0.01% |
16,966
-2,751
| -14% | -$83.8K |
|