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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SGEN
351
DELISTED
Seagen Inc. Common Stock
SGEN
| $1.04M | ﹤0.01% |
7,593
-16,213
| -68% | -$2.22M |
|
352
United States Brent Oil Fund
BNO
$102M
| $1.04M | ﹤0.01% |
37,934
-20,283
| -35% | -$554K |
|
353
iShares Core S&P Mid-Cap ETF
IJH
$100B
| $1.03M | ﹤0.01% |
23,600
+13,750
| +140% | +$602K |
|
354
Waters Corp
WAT
$17.9B
| $1.03M | ﹤0.01% |
+3,837
| New | +$1.03M |
|
355
American Water Works
AWK
$27.3B
| $1.03M | ﹤0.01% |
7,933
-872
| -10% | -$113K |
|
|
CANO
356
DELISTED
Cano Health, Inc.
CANO
| $1.03M | ﹤0.01% |
1,191
+1,145
| +2,489% | +$992K |
|
357
State Street
STT
$31.8B
| $1.03M | ﹤0.01% |
16,958
+7,386
| +77% | +$449K |
|
358
Rio Tinto
RIO
$101B
| $1.03M | ﹤0.01% |
18,703
-42,432
| -69% | -$2.33M |
|
359
Banco Bradesco
BBD
$33.2B
| $1.02M | ﹤0.01% |
+277,770
| New | +$1.02M |
|
360
Everest Group
EG
$14.2B
| $1.02M | ﹤0.01% |
3,882
+2,767
| +248% | +$726K |
|
361
Melco Resorts & Entertainment
MLCO
$3.79B
| $1.02M | ﹤0.01% |
153,647
+75,115
| +96% | +$498K |
|
|
BLUE
362
DELISTED
bluebird bio
BLUE
| $1.02M | ﹤0.01% |
8,022
+697
| +10% | +$88.2K |
|
363
Invesco
IVZ
$9.94B
| $1.02M | ﹤0.01% |
74,105
+52,188
| +238% | +$715K |
|
364
Appian
APPN
$2.39B
| $1.01M | ﹤0.01% |
24,831
+2,146
| +9% | +$87.5K |
|
365
Pinduoduo
PDD
$180B
| $1.01M | ﹤0.01% |
16,189
+15,989
| +7,995% | +$1M |
|
366
Masco
MAS
$15.3B
| $1.01M | ﹤0.01% |
+21,548
| New | +$1.01M |
|
367
Shutterstock
SSTK
$718M
| $1M | ﹤0.01% |
+19,994
| New | +$1M |
|
368
Clearfield
CLFD
$456M
| $1M | ﹤0.01% |
+9,575
| New | +$1M |
|
369
Neogen
NEOG
$1.25B
| $1M | ﹤0.01% |
71,722
+71,617
| +68,207% | +$1,000K |
|
|
RCM
370
DELISTED
R1 RCM Inc. Common Stock
RCM
| $998K | ﹤0.01% |
53,865
+53,501
| +14,698% | +$991K |
|
371
GoPro
GPRO
$252M
| $996K | ﹤0.01% |
202,031
+163,047
| +418% | +$804K |
|
372
ProShares Ultra Silver
AGQ
$888M
| $993K | ﹤0.01% |
47,879
+38,178
| +394% | +$792K |
|
373
Skechers
SKX
$9.5B
| $989K | ﹤0.01% |
31,202
+20,407
| +189% | +$647K |
|
374
Griffon
GFF
$3.66B
| $985K | ﹤0.01% |
+33,398
| New | +$985K |
|
375
Hecla Mining
HL
$6.72B
| $985K | ﹤0.01% |
250,068
+54,062
| +28% | +$213K |
|