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
|
$41.4M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
$12.3M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 4 |
Alibaba
BABA
|
$9.66M |
| 5 |
Intel
INTC
|
$9.11M |
Top Sells
| 1 |
Apple
AAPL
|
$36.8M |
| 2 |
Gilead Sciences
GILD
|
$31.2M |
| 3 |
Booking.com
BKNG
|
$29M |
| 4 |
Amazon
AMZN
|
$25.6M |
| 5 |
Baidu
BIDU
|
$12.9M |
Sector Composition
| 1 | Communication Services | 13.31% |
| 2 | Consumer Discretionary | 13.07% |
| 3 | Healthcare | 12.41% |
| 4 | Technology | 11.91% |
| 5 | Financials | 8.28% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
Boyd Gaming
BYD
$6.93B
| $265K | 0.03% |
18,674
+2,320
| +14% | +$32.9K |
|
|
ADVS
352
DELISTED
ADVENT SOFTWARE INC
ADVS
| $265K | 0.03% |
+6,028
| New | +$265K |
|
353
Citigroup
C
$176B
| $264K | 0.03% |
+5,143
| New | +$264K |
|
|
FARO
354
DELISTED
Faro Technologies
FARO
| $263K | 0.03% |
+4,234
| New | +$263K |
|
355
TJX Companies
TJX
$155B
| $262K | 0.03% |
+7,492
| New | +$262K |
|
|
MW
356
DELISTED
THE MENS WAREHOUSE INC
MW
| $262K | 0.03% |
5,020
+3,726
| +288% | +$194K |
|
357
Acuity Brands
AYI
$10.4B
| $261K | 0.03% |
+1,557
| New | +$261K |
|
358
Intercontinental Exchange
ICE
$99.8B
| $259K | 0.03% |
5,565
-18,705
| -77% | -$871K |
|
359
US Bancorp
USB
$75.9B
| $259K | 0.03% |
+5,931
| New | +$259K |
|
360
ODP
ODP
$668M
| $258K | 0.03% |
+2,811
| New | +$258K |
|
361
Sasol
SSL
$4.51B
| $257K | 0.03% |
+7,566
| New | +$257K |
|
362
TriNet
TNET
$3.43B
| $257K | 0.03% |
7,297
+4,420
| +154% | +$156K |
|
|
ETP
363
DELISTED
Energy Transfer Partners L.p.
ETP
| $257K | 0.03% |
4,623
-4,634
| -50% | -$258K |
|
364
Global X Silver Miners ETF NEW
SIL
$2.92B
| $256K | 0.03% |
10,185
+6,242
| +158% | +$157K |
|
|
CONN
365
DELISTED
Conn's Inc.
CONN
| $256K | 0.03% |
+8,483
| New | +$256K |
|
|
WIRE
366
DELISTED
Encore Wire Corp
WIRE
| $256K | 0.03% |
+6,761
| New | +$256K |
|
367
Air Lease Corp
AL
$7.12B
| $255K | 0.03% |
+6,772
| New | +$255K |
|
368
Black Hills Corp
BKH
$4.35B
| $255K | 0.03% |
+5,069
| New | +$255K |
|
369
Steris
STE
$24.2B
| $252K | 0.03% |
3,600
+2,495
| +226% | +$175K |
|
370
ProShares Ultra Bloomberg Crude Oil
UCO
$356M
| $252K | 0.03% |
596
+65
| +12% | +$27.5K |
|
371
Thor Industries
THO
$5.94B
| $251K | 0.03% |
3,978
+3,679
| +1,230% | +$232K |
|
372
Grupo Cibest S.A. American Depositary Shares (each representing four (4) Preferred Shares)
CIB
$12.5B
| $249K | 0.03% |
+6,346
| New | +$249K |
|
373
Constellation Brands
STZ
$26.2B
| $249K | 0.03% |
+2,146
| New | +$249K |
|
|
WPZ
374
DELISTED
Williams Partners L.P.
WPZ
| $249K | 0.03% |
5,063
+2,512
| +98% | +$124K |
|
|
TUP
375
DELISTED
Tupperware Brands Corporation
TUP
| $247K | 0.03% |
+3,586
| New | +$247K |
|