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 | |
|---|---|---|---|---|---|---|
451
Supernus Pharmaceuticals
SUPN
$2.58B
| $517K | ﹤0.01% |
21,775
-10,650
| -33% | -$253K |
|
452
Digital Realty Trust
DLR
$55.7B
| $514K | ﹤0.01% |
3,623
-16,737
| -82% | -$2.37M |
|
453
Vail Resorts
MTN
$5.87B
| $512K | ﹤0.01% |
2,815
-278
| -9% | -$50.6K |
|
454
PetMed Express
PETS
$63M
| $508K | ﹤0.01% |
14,272
+6,166
| +76% | +$219K |
|
|
GLUU
455
DELISTED
Glu Mobile Inc.
GLUU
| $504K | ﹤0.01% |
+54,393
| New | +$504K |
|
456
Novo Nordisk
NVO
$245B
| $501K | ﹤0.01% |
+15,306
| New | +$501K |
|
457
iPath Series B S&P 500 VIX Mid-Term Futures ETN
VXZ
$34.8M
| $500K | ﹤0.01% |
3,713
-4,587
| -55% | -$618K |
|
458
Anywhere Real Estate
HOUS
$724M
| $499K | ﹤0.01% |
67,444
+42,794
| +174% | +$317K |
|
459
Inovio Pharmaceuticals
INO
$148M
| $497K | ﹤0.01% |
1,538
+1,348
| +709% | +$436K |
|
|
IMMU
460
DELISTED
Immunomedics Inc
IMMU
| $493K | ﹤0.01% |
+13,921
| New | +$493K |
|
461
WillScot Mobile Mini Holdings
WSC
$4.32B
| $491K | ﹤0.01% |
+39,978
| New | +$491K |
|
462
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$163M
| $487K | ﹤0.01% |
21,358
+10,738
| +101% | +$245K |
|
463
Hercules Capital
HTGC
$3.49B
| $486K | ﹤0.01% |
46,451
+13,639
| +42% | +$143K |
|
464
TEGNA Inc
TGNA
$3.38B
| $485K | ﹤0.01% |
+43,543
| New | +$485K |
|
465
H&R Block
HRB
$6.85B
| $481K | ﹤0.01% |
33,715
+28,382
| +532% | +$405K |
|
|
ARCH
466
DELISTED
Arch Resources, Inc.
ARCH
| $481K | ﹤0.01% |
+16,956
| New | +$481K |
|
467
Arista Networks
ANET
$180B
| $480K | ﹤0.01% |
36,608
-219,136
| -86% | -$2.87M |
|
468
OR Royalties Inc.
OR
$6.48B
| $479K | ﹤0.01% |
47,988
+35,105
| +272% | +$350K |
|
|
RADA
469
DELISTED
Rada Electronic Industries Ltd
RADA
| $478K | ﹤0.01% |
73,131
-62,463
| -46% | -$408K |
|
470
Autoliv
ALV
$9.58B
| $477K | ﹤0.01% |
+7,406
| New | +$477K |
|
471
Editas Medicine
EDIT
$248M
| $477K | ﹤0.01% |
16,155
-66,429
| -80% | -$1.96M |
|
472
Dycom Industries
DY
$7.19B
| $476K | ﹤0.01% |
11,655
-10,230
| -47% | -$418K |
|
473
UBS Group
UBS
$128B
| $476K | ﹤0.01% |
41,303
-168,097
| -80% | -$1.94M |
|
474
Mid-America Apartment Communities
MAA
$17B
| $475K | ﹤0.01% |
4,151
-446
| -10% | -$51K |
|
|
LSXMA
475
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
| $475K | ﹤0.01% |
18,733
-196
| -1% | -$4.97K |
|