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
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
Roundhill Video Games ETF
NERD
$26.7M
| $657K | ﹤0.01% |
+21,817
| New | +$657K |
|
552
Spruce Power Holding Corp
SPRU
$28.7M
| $656K | ﹤0.01% |
3,459
+2,406
| +228% | +$456K |
|
|
VLRS
553
Controladora Vuela Compañía de Aviación
VLRS
$712M
| $654K | ﹤0.01% |
+52,670
| New | +$654K |
|
|
SWN
554
DELISTED
Southwestern Energy Company
SWN
| $652K | ﹤0.01% |
218,945
+183,427
| +516% | +$546K |
|
555
Baker Hughes
BKR
$46.3B
| $647K | ﹤0.01% |
31,076
-37,985
| -55% | -$791K |
|
|
DBD
556
DELISTED
Diebold Nixdorf Incorporated
DBD
| $647K | ﹤0.01% |
60,699
+37,373
| +160% | +$398K |
|
557
Stride
LRN
$6.89B
| $646K | ﹤0.01% |
30,475
+18,742
| +160% | +$397K |
|
558
Arcus Biosciences
RCUS
$1.25B
| $643K | ﹤0.01% |
+24,769
| New | +$643K |
|
559
Weyerhaeuser
WY
$18.1B
| $641K | ﹤0.01% |
+19,125
| New | +$641K |
|
|
AUY
560
DELISTED
Yamana Gold, Inc.
AUY
| $639K | ﹤0.01% |
+111,938
| New | +$639K |
|
|
CTXS
561
DELISTED
Citrix Systems Inc
CTXS
| $639K | ﹤0.01% |
+4,915
| New | +$639K |
|
562
Century Communities
CCS
$1.99B
| $638K | ﹤0.01% |
14,584
+6,989
| +92% | +$306K |
|
563
Ameriprise Financial
AMP
$46.4B
| $635K | ﹤0.01% |
+3,271
| New | +$635K |
|
564
Teucrium Corn Fund
CORN
$48.5M
| $635K | ﹤0.01% |
40,769
-67,258
| -62% | -$1.05M |
|
565
Perrigo
PRGO
$3.04B
| $635K | ﹤0.01% |
14,218
-11,049
| -44% | -$493K |
|
566
Synaptics
SYNA
$2.67B
| $633K | ﹤0.01% |
6,569
-917
| -12% | -$88.4K |
|
|
CSII
567
DELISTED
Cardiovascular Systems, Inc.
CSII
| $630K | ﹤0.01% |
14,402
+11,285
| +362% | +$494K |
|
|
MIME
568
DELISTED
Mimecast Limited
MIME
| $629K | ﹤0.01% |
+11,075
| New | +$629K |
|
569
PotlatchDeltic
PCH
$3.21B
| $628K | ﹤0.01% |
12,567
-2,094
| -14% | -$105K |
|
|
EGIO
570
DELISTED
Edgio, Inc. Common Stock
EGIO
| $628K | ﹤0.01% |
3,939
+1,369
| +53% | +$218K |
|
571
VanEck Video Gaming and eSports ETF
ESPO
$462M
| $626K | ﹤0.01% |
8,950
-2,120
| -19% | -$148K |
|
572
MaxLinear
MXL
$1.37B
| $626K | ﹤0.01% |
16,416
+8,705
| +113% | +$332K |
|
573
Bank OZK
OZK
$5.89B
| $622K | ﹤0.01% |
+19,896
| New | +$622K |
|
574
ScottsMiracle-Gro
SMG
$3.5B
| $619K | ﹤0.01% |
3,109
-199
| -6% | -$39.6K |
|
|
RDFN
575
DELISTED
Redfin
RDFN
| $618K | ﹤0.01% |
+9,012
| New | +$618K |
|