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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
+$40.9M |
| 4 |
Apple
AAPL
|
+$16.5M |
| 5 |
Visa
V
|
+$12M |
Top Sells
| 1 |
Amazon
AMZN
|
+$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
+$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$33.4M |
| 4 |
Goldman Sachs
GS
|
+$30.2M |
| 5 |
Boeing
BA
|
+$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
576
Travel + Leisure Co
TNL
$4B
| $236K | ﹤0.01% |
+6,586
| New | +$236K |
|
577
Direxion Daily S&P Biotech Bull 3X Shares
LABU
$690M
| $235K | ﹤0.01% |
+359
| New | +$235K |
|
|
ARRS
578
DELISTED
ARRIS International plc Ordinary Shares
ARRS
| $235K | ﹤0.01% |
+7,715
| New | +$235K |
|
579
SITE Centers
SITC
$468M
| $234K | ﹤0.01% |
+27,142
| New | +$234K |
|
580
Abercrombie & Fitch
ANF
$4.56B
| $233K | ﹤0.01% |
+11,642
| New | +$233K |
|
581
BorgWarner
BWA
$9.32B
| $233K | ﹤0.01% |
7,644
+2,941
| +63% | +$89.6K |
|
582
ProShares Ultra QQQ
QLD
$9.17B
| $233K | ﹤0.01% |
+13,912
| New | +$233K |
|
|
CPE
583
DELISTED
Callon Petroleum Company
CPE
| $233K | ﹤0.01% |
+3,605
| New | +$233K |
|
|
VAR
584
DELISTED
Varian Medical Systems, Inc.
VAR
| $233K | ﹤0.01% |
2,063
-5,415
| -72% | -$612K |
|
585
Galicia Financial Group
GGAL
$5.21B
| $232K | ﹤0.01% |
8,416
-4,147
| -33% | -$114K |
|
586
Stride
LRN
$6.99B
| $232K | ﹤0.01% |
+9,395
| New | +$232K |
|
587
Embraer
ERJ
$10.9B
| $231K | ﹤0.01% |
10,446
-14,386
| -58% | -$318K |
|
588
Vital Energy
VTLE
$633M
| $230K | ﹤0.01% |
+3,180
| New | +$230K |
|
|
GHDX
589
DELISTED
Genomic Health, Inc.
GHDX
| $230K | ﹤0.01% |
+3,586
| New | +$230K |
|
590
BGC Group
BGC
$4.79B
| $229K | ﹤0.01% |
44,465
-39,970
| -47% | -$206K |
|
591
Bankunited
BKU
$2.91B
| $229K | ﹤0.01% |
7,666
+6,356
| +485% | +$190K |
|
592
Coeur Mining
CDE
$9.49B
| $229K | ﹤0.01% |
51,425
-18,321
| -26% | -$81.6K |
|
593
Evolent Health
EVH
$1.09B
| $228K | ﹤0.01% |
+11,432
| New | +$228K |
|
594
Prologis
PLD
$103B
| $228K | ﹤0.01% |
3,890
-2,438
| -39% | -$143K |
|
|
BHR
595
Braemar Hotels & Resorts
BHR
$196M
| $227K | ﹤0.01% |
25,695
+20,964
| +443% | +$185K |
|
596
Casey's General Stores
CASY
$19.7B
| $227K | ﹤0.01% |
1,773
-1,141
| -39% | -$146K |
|
597
Solid Biosciences
SLDB
$409M
| $227K | ﹤0.01% |
566
+523
| +1,216% | +$210K |
|
|
UNIT
598
Uniti Group
UNIT
$1.72B
| $226K | ﹤0.01% |
+14,526
| New | +$226K |
|
599
Wingstop
WING
$7.81B
| $226K | ﹤0.01% |
3,526
+1,412
| +67% | +$90.5K |
|
600
NNN REIT
NNN
$8.06B
| $225K | ﹤0.01% |
+4,642
| New | +$225K |
|