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 |
Amazon
AMZN
|
+$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37M |
| 3 |
Amgen
AMGN
|
+$32.3M |
| 4 |
Micron Technology
MU
|
+$29.4M |
| 5 |
Qualcomm
QCOM
|
+$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$29.8M |
| 2 |
Gilead Sciences
GILD
|
+$29.3M |
| 3 |
Goldman Sachs
GS
|
+$27.7M |
| 4 |
Booking.com
BKNG
|
+$26M |
| 5 |
AT&T
T
|
+$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
501
Assured Guaranty
AGO
$3.9B
| $329K | 0.01% |
7,884
-63,493
| -89% | -$2.65M |
|
502
Exact Sciences
EXAS
$10.5B
| $329K | 0.01% |
9,312
+2,059
| +28% | +$72.7K |
|
503
Sempra
SRE
$51.8B
| $326K | 0.01% |
+5,800
| New | +$326K |
|
504
Annaly Capital Management
NLY
$14.3B
| $325K | 0.01% |
6,758
+5,356
| +382% | +$258K |
|
505
Smith & Nephew
SNN
$16.8B
| $325K | 0.01% |
9,344
+2,918
| +45% | +$101K |
|
506
KeyCorp
KEY
$21B
| $324K | 0.01% |
17,337
-18,300
| -51% | -$342K |
|
507
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$4.63B
| $323K | 0.01% |
5,841
+5,384
| +1,178% | +$298K |
|
|
SONC
508
DELISTED
Sonic Corp
SONC
| $319K | 0.01% |
+12,071
| New | +$319K |
|
|
CAF
509
Morgan Stanley China A Share Fund
CAF
$264M
| $316K | 0.01% |
14,153
+12,489
| +751% | +$279K |
|
510
Comerica
CMA
$8.88B
| $316K | 0.01% |
+4,316
| New | +$316K |
|
|
ESV
511
DELISTED
Ensco Rowan plc
ESV
| $316K | 0.01% |
15,330
+13,238
| +633% | +$273K |
|
512
Jacobs Solutions
J
$17.3B
| $315K | 0.01% |
7,006
-3,303
| -32% | -$149K |
|
513
Travelzoo
TZOO
$106M
| $315K | 0.01% |
28,821
+26,374
| +1,078% | +$288K |
|
|
HNP
514
DELISTED
Huaneng Power Intl, Inc.
HNP
| $315K | 0.01% |
+11,361
| New | +$315K |
|
|
AKRX
515
DELISTED
Akorn, Inc.
AKRX
| $311K | 0.01% |
9,282
+1,636
| +21% | +$54.8K |
|
516
AutoZone
AZO
$71B
| $310K | 0.01% |
544
-764
| -58% | -$435K |
|
|
ANW
517
DELISTED
Aegean Marine Petroleum Network
ANW
| $310K | 0.01% |
+53,101
| New | +$310K |
|
518
Brinker International
EAT
$6.93B
| $305K | 0.01% |
8,013
-1,238
| -13% | -$47.1K |
|
|
VIAB
519
DELISTED
Viacom Inc. Class B
VIAB
| $305K | 0.01% |
+9,092
| New | +$305K |
|
520
GoPro
GPRO
$264M
| $303K | 0.01% |
+37,379
| New | +$303K |
|
521
Idexx Laboratories
IDXX
$52.2B
| $301K | 0.01% |
+1,868
| New | +$301K |
|
|
EMES
522
DELISTED
Emerge Energy Services LP
EMES
| $301K | 0.01% |
33,494
-41,795
| -56% | -$376K |
|
|
HZNP
523
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $301K | 0.01% |
+25,377
| New | +$301K |
|
|
UFS
524
DELISTED
DOMTAR CORPORATION (New)
UFS
| $300K | 0.01% |
7,825
-373
| -5% | -$14.3K |
|
525
Hecla Mining
HL
$6.82B
| $299K | 0.01% |
58,656
-9,471
| -14% | -$48.3K |
|