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 | |
|---|---|---|---|---|---|---|
476
Agnico Eagle Mines
AEM
$76.5B
| $334K | ﹤0.01% |
8,284
+4,642
| +127% | +$187K |
|
|
STAY
477
DELISTED
Extended Stay America, Inc. Paired Share Unit
STAY
| $332K | ﹤0.01% |
21,429
+12,464
| +139% | +$193K |
|
|
ACB
478
Aurora Cannabis
ACB
$281M
| $331K | ﹤0.01% |
+556
| New | +$331K |
|
479
Toyota
TM
$261B
| $331K | ﹤0.01% |
2,860
+1,899
| +198% | +$220K |
|
480
RPM International
RPM
$16.1B
| $329K | ﹤0.01% |
5,599
-6,617
| -54% | -$389K |
|
481
Banco Bilbao Vizcaya Argentaria
BBVA
$107B
| $327K | ﹤0.01% |
61,919
+50,791
| +456% | +$268K |
|
482
Main Street Capital
MAIN
$5.91B
| $327K | ﹤0.01% |
9,673
+6,016
| +165% | +$203K |
|
483
DTE Energy
DTE
$28.1B
| $325K | ﹤0.01% |
+3,472
| New | +$325K |
|
484
Vicor
VICR
$2.25B
| $325K | ﹤0.01% |
8,619
-21,204
| -71% | -$800K |
|
485
RenaissanceRe
RNR
$11.3B
| $319K | ﹤0.01% |
2,387
-1,001
| -30% | -$134K |
|
|
STI
486
DELISTED
SunTrust Banks, Inc.
STI
| $319K | ﹤0.01% |
6,335
-672
| -10% | -$33.8K |
|
487
Calix
CALX
$3.97B
| $318K | ﹤0.01% |
32,683
+19,850
| +155% | +$193K |
|
488
Lockheed Martin
LMT
$106B
| $318K | ﹤0.01% |
1,215
-10,568
| -90% | -$2.77M |
|
489
Camping World
CWH
$1.11B
| $317K | ﹤0.01% |
27,669
-7,319
| -21% | -$83.9K |
|
|
HEP
490
DELISTED
Holly Energy Partners, L.P.
HEP
| $317K | ﹤0.01% |
+11,112
| New | +$317K |
|
|
LLL
491
DELISTED
L3 Technologies, Inc.
LLL
| $315K | ﹤0.01% |
1,815
+967
| +114% | +$168K |
|
492
American Superconductor
AMSC
$2.22B
| $314K | ﹤0.01% |
28,193
+17,031
| +153% | +$190K |
|
|
NPTN
493
DELISTED
NEOPHOTONICS CORP
NPTN
| $313K | ﹤0.01% |
48,375
+45,642
| +1,670% | +$295K |
|
494
Crown Castle
CCI
$40.8B
| $312K | ﹤0.01% |
+2,876
| New | +$312K |
|
495
Appian
APPN
$2.39B
| $310K | ﹤0.01% |
11,618
+6,487
| +126% | +$173K |
|
|
LL
496
DELISTED
LL Flooring Holdings, Inc.
LL
| $307K | ﹤0.01% |
+32,292
| New | +$307K |
|
|
SGEN
497
DELISTED
Seagen Inc. Common Stock
SGEN
| $306K | ﹤0.01% |
5,415
-680
| -11% | -$38.4K |
|
498
LivaNova
LIVN
$3.2B
| $303K | ﹤0.01% |
3,320
-2,250
| -40% | -$205K |
|
|
YRD
499
Yiren Digital
YRD
$497M
| $297K | ﹤0.01% |
27,657
-29,430
| -52% | -$316K |
|
500
Omnicell
OMCL
$1.49B
| $296K | ﹤0.01% |
+4,834
| New | +$296K |
|