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 | |
|---|---|---|---|---|---|---|
276
Microchip Technology
MCHP
$35.6B
| $765K | ﹤0.01% |
+21,278
| New | +$765K |
|
277
Textron
TXT
$14.5B
| $765K | ﹤0.01% |
16,645
+12,073
| +264% | +$555K |
|
278
Hasbro
HAS
$11.2B
| $757K | ﹤0.01% |
+9,317
| New | +$757K |
|
279
Target
TGT
$42.3B
| $751K | ﹤0.01% |
+11,366
| New | +$751K |
|
280
MarketAxess Holdings
MKTX
$7.01B
| $750K | ﹤0.01% |
3,551
+3,268
| +1,155% | +$690K |
|
281
ConocoPhillips
COP
$116B
| $746K | ﹤0.01% |
11,973
-23,247
| -66% | -$1.45M |
|
282
Radware
RDWR
$1.07B
| $746K | ﹤0.01% |
32,881
-49,417
| -60% | -$1.12M |
|
283
Ultra Clean Holdings
UCTT
$1.11B
| $743K | ﹤0.01% |
87,792
+74,034
| +538% | +$627K |
|
284
Dover
DOV
$24.4B
| $718K | ﹤0.01% |
10,127
+9,359
| +1,219% | +$664K |
|
|
GG
285
DELISTED
Goldcorp Inc
GG
| $717K | ﹤0.01% |
73,226
+49,087
| +203% | +$481K |
|
286
Deutsche Bank
DB
$67.8B
| $713K | ﹤0.01% |
+87,602
| New | +$713K |
|
287
Ollie's Bargain Outlet
OLLI
$8.18B
| $709K | ﹤0.01% |
+10,661
| New | +$709K |
|
288
Puma Biotechnology
PBYI
$253M
| $706K | ﹤0.01% |
34,716
+28,084
| +423% | +$571K |
|
289
Boston Properties
BXP
$12.2B
| $705K | ﹤0.01% |
6,265
+4,727
| +307% | +$532K |
|
290
Zoetis
ZTS
$67.9B
| $705K | ﹤0.01% |
8,246
-1,386
| -14% | -$118K |
|
291
Cognizant
CTSH
$35.1B
| $694K | ﹤0.01% |
10,945
+2,250
| +26% | +$143K |
|
|
TIF
292
DELISTED
Tiffany & Co.
TIF
| $691K | ﹤0.01% |
+8,587
| New | +$691K |
|
293
Match Group
MTCH
$9.18B
| $686K | ﹤0.01% |
16,050
+5,472
| +52% | +$234K |
|
|
EBIX
294
DELISTED
Ebix Inc
EBIX
| $686K | ﹤0.01% |
+16,137
| New | +$686K |
|
295
Veeva Systems
VEEV
$44.7B
| $685K | ﹤0.01% |
+7,677
| New | +$685K |
|
296
iShares MSCI Italy ETF
EWI
$708M
| $678K | ﹤0.01% |
+28,023
| New | +$678K |
|
|
BERY
297
DELISTED
Berry Global Group, Inc.
BERY
| $678K | ﹤0.01% |
15,550
-23,749
| -60% | -$1.04M |
|
298
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$443M
| $677K | ﹤0.01% |
+2,201
| New | +$677K |
|
299
Sarepta Therapeutics
SRPT
$1.96B
| $674K | ﹤0.01% |
6,180
-3,905
| -39% | -$426K |
|
300
Clorox
CLX
$15.5B
| $670K | ﹤0.01% |
+4,350
| New | +$670K |
|