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
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
401
Petrobras
PBR
$78.7B
| $490K | 0.02% |
48,900
-71,024
| -59% | -$712K |
|
|
AMJ
402
DELISTED
JP Morgan Alerian MLP Index ETN 5/24/24
AMJ
| $490K | 0.02% |
17,395
+12,790
| +278% | +$360K |
|
403
Invesco DB Agriculture Fund
DBA
$804M
| $489K | 0.02% |
25,792
+22,711
| +737% | +$431K |
|
404
Lands' End
LE
$439M
| $484K | 0.02% |
36,669
+14,271
| +64% | +$188K |
|
405
Mattel
MAT
$6.06B
| $484K | 0.02% |
31,274
+30,243
| +2,933% | +$468K |
|
|
ABB
406
DELISTED
ABB Ltd.
ABB
| $484K | 0.02% |
+19,583
| New | +$484K |
|
407
Johnson Controls International
JCI
$69.5B
| $479K | 0.02% |
+11,903
| New | +$479K |
|
|
TFCFA
408
DELISTED
Twenty-First Century Fox, Inc. Class A
TFCFA
| $479K | 0.02% |
+18,173
| New | +$479K |
|
409
Leidos
LDOS
$23B
| $477K | 0.02% |
8,064
+1,069
| +15% | +$63.2K |
|
|
HYGS
410
DELISTED
Hydrogenics Corp
HYGS
| $474K | 0.02% |
58,203
+6,111
| +12% | +$49.8K |
|
|
SRCL
411
DELISTED
Stericycle Inc
SRCL
| $472K | 0.02% |
6,604
+3,838
| +139% | +$274K |
|
412
Openlane
KAR
$3.09B
| $471K | 0.02% |
26,079
+19,889
| +321% | +$359K |
|
413
Graco
GGG
$14.2B
| $468K | 0.02% |
+11,361
| New | +$468K |
|
414
Skechers
SKX
$9.5B
| $467K | 0.02% |
18,648
-3,273
| -15% | -$82K |
|
|
OA
415
DELISTED
Orbital ATK, Inc.
OA
| $466K | 0.02% |
+3,500
| New | +$466K |
|
416
Host Hotels & Resorts
HST
$12B
| $465K | 0.02% |
+25,193
| New | +$465K |
|
417
Cenovus Energy
CVE
$28.7B
| $461K | 0.02% |
46,032
-23,269
| -34% | -$233K |
|
418
Energy Recovery
ERII
$767M
| $461K | 0.02% |
58,410
+49,978
| +593% | +$394K |
|
419
ProShares UltraShort QQQ
QID
$273M
| $460K | 0.02% |
+372
| New | +$460K |
|
|
DYN
420
DELISTED
Dynegy, Inc.
DYN
| $452K | 0.02% |
46,270
+1,026
| +2% | +$10K |
|
|
WRD
421
DELISTED
WildHorse Resource Development
WRD
| $451K | 0.02% |
33,912
+22,696
| +202% | +$302K |
|
422
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$246M
| $448K | 0.02% |
185
+159
| +612% | +$385K |
|
423
Quanta Services
PWR
$55.5B
| $447K | 0.02% |
+11,988
| New | +$447K |
|
424
Arrow Electronics
ARW
$6.57B
| $446K | 0.02% |
5,556
+2,519
| +83% | +$202K |
|
425
Northrop Grumman
NOC
$83.2B
| $446K | 0.02% |
1,553
-5,002
| -76% | -$1.44M |
|