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 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
476
Wolfspeed
WOLF
$233M
| $353K | 0.02% |
+8,767
| New | +$353K |
|
477
Laureate Education
LAUR
$4.07B
| $352K | 0.02% |
25,632
-677
| -3% | -$9.3K |
|
478
Nike
NKE
$109B
| $352K | 0.02% |
+5,304
| New | +$352K |
|
479
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.44B
| $351K | 0.02% |
4,769
-1,386
| -23% | -$102K |
|
|
TGP
480
DELISTED
Teekay LNG Partners L.P.
TGP
| $350K | 0.02% |
+19,605
| New | +$350K |
|
481
Toyota
TM
$257B
| $350K | 0.02% |
+2,687
| New | +$350K |
|
482
Element Solutions
ESI
$6.24B
| $348K | 0.02% |
36,167
+13,507
| +60% | +$130K |
|
483
Nasdaq
NDAQ
$54.4B
| $348K | 0.02% |
+12,123
| New | +$348K |
|
|
ECHO
484
DELISTED
Echo Global Logistics, Inc.
ECHO
| $348K | 0.02% |
+12,639
| New | +$348K |
|
|
QIWI
485
DELISTED
QIWI PLC
QIWI
| $348K | 0.02% |
18,228
+7,904
| +77% | +$151K |
|
486
SPDR S&P Bank ETF
KBE
$1.55B
| $347K | 0.02% |
+7,254
| New | +$347K |
|
|
LJPC
487
DELISTED
La Jolla Pharmaceutical Company
LJPC
| $346K | 0.02% |
11,638
-5,783
| -33% | -$172K |
|
488
Global X Silver Miners ETF NEW
SIL
$3.08B
| $342K | 0.02% |
11,150
-966
| -8% | -$29.6K |
|
489
Alaunos Therapeutics
TCRT
$5.01M
| $341K | 0.02% |
582
+421
| +261% | +$247K |
|
490
La-Z-Boy
LZB
$1.43B
| $340K | 0.01% |
11,364
+7,468
| +192% | +$223K |
|
|
ATHN
491
DELISTED
Athenahealth, Inc.
ATHN
| $340K | 0.01% |
+2,383
| New | +$340K |
|
492
Jones Lang LaSalle
JLL
$14.6B
| $339K | 0.01% |
1,943
-223
| -10% | -$38.9K |
|
493
Box
BOX
$4.75B
| $338K | 0.01% |
16,457
+15,677
| +2,010% | +$322K |
|
|
AKRX
494
DELISTED
Akorn, Inc.
AKRX
| $338K | 0.01% |
18,105
+14,531
| +407% | +$271K |
|
495
Liberty Latin America Class A
LILA
$1.52B
| $337K | 0.01% |
18,413
+12,800
| +228% | +$234K |
|
496
ProShares UltraPro Russell2000
URTY
$392M
| $337K | 0.01% |
+4,255
| New | +$337K |
|
497
PVH
PVH
$3.91B
| $336K | 0.01% |
2,223
-13,823
| -86% | -$2.09M |
|
498
Allison Transmission
ALSN
$7.41B
| $334K | 0.01% |
8,567
+4,670
| +120% | +$182K |
|
499
Vanguard Materials ETF
VAW
$2.85B
| $334K | 0.01% |
2,593
+2,189
| +542% | +$282K |
|
|
WWE
500
DELISTED
World Wrestling Entertainment
WWE
| $334K | 0.01% |
+9,293
| New | +$334K |
|