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
|
$54.1M |
| 2 |
Apple
AAPL
|
$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
$16.5M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$9.89M |
| 2 |
McDonald's
MCD
|
$8.52M |
| 3 |
Ralph Lauren
RL
|
$5.22M |
| 4 |
Intel
INTC
|
$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
326
Henry Schein
HSIC
$8.42B
| $330K | 0.03% |
+5,926
| New | +$330K |
|
327
Signet Jewelers
SIG
$3.85B
| $330K | 0.03% |
2,574
-1,322
| -34% | -$169K |
|
328
Hanesbrands
HBI
$2.27B
| $327K | 0.03% |
9,833
+8,271
| +530% | +$275K |
|
|
TW
329
DELISTED
TOWERS WATSON & CO COM STK CL A (DE)
TW
| $324K | 0.03% |
2,581
+711
| +38% | +$89.3K |
|
330
Antero Resources
AR
$10.1B
| $323K | 0.03% |
9,420
+310
| +3% | +$10.6K |
|
|
AMAG
331
DELISTED
AMAG Pharmaceuticals, Inc.
AMAG
| $322K | 0.03% |
+4,667
| New | +$322K |
|
332
Home Depot
HD
$417B
| $321K | 0.03% |
2,890
-9,591
| -77% | -$1.07M |
|
333
VF Corp
VFC
$5.86B
| $321K | 0.03% |
+4,897
| New | +$321K |
|
334
Check Point Software Technologies
CHKP
$20.7B
| $319K | 0.03% |
+4,018
| New | +$319K |
|
|
AEC
335
DELISTED
ASSOCIATED ESTATES REALTY CORP
AEC
| $318K | 0.03% |
11,119
+9,686
| +676% | +$277K |
|
336
Ford
F
$46.7B
| $316K | 0.03% |
21,099
+3,552
| +20% | +$53.2K |
|
337
Public Storage
PSA
$52.2B
| $316K | 0.03% |
1,715
-7,043
| -80% | -$1.3M |
|
338
Halozyme
HALO
$8.76B
| $314K | 0.03% |
13,933
+10,841
| +351% | +$244K |
|
|
ZU
339
DELISTED
ZULILY INC CLASS A COMMON STOCK
ZU
| $312K | 0.03% |
23,940
+18,315
| +326% | +$239K |
|
340
Axalta
AXTA
$6.89B
| $311K | 0.03% |
9,418
+9,134
| +3,216% | +$302K |
|
341
CSX Corp
CSX
$60.6B
| $310K | 0.03% |
+28,554
| New | +$310K |
|
342
Invesco CurrencyShares Australian Dollar Trust
FXA
$77.8M
| $310K | 0.03% |
4,024
-829
| -17% | -$63.9K |
|
|
VNET
343
VNET Group
VNET
$2.13B
| $309K | 0.03% |
15,093
+5,452
| +57% | +$112K |
|
|
GRUB
344
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $307K | 0.03% |
+4,519
| New | +$307K |
|
345
A.O. Smith
AOS
$10.3B
| $305K | 0.03% |
8,480
+6,526
| +334% | +$235K |
|
346
Sociedad Química y Minera de Chile
SQM
$13.1B
| $305K | 0.03% |
19,590
+17,931
| +1,081% | +$279K |
|
|
APOL
347
DELISTED
Apollo Education Group Inc Class A
APOL
| $305K | 0.03% |
23,739
+2,518
| +12% | +$32.4K |
|
|
UFS
348
DELISTED
DOMTAR CORPORATION (New)
UFS
| $305K | 0.03% |
7,388
-905
| -11% | -$37.4K |
|
349
Golar LNG
GLNG
$4.52B
| $304K | 0.03% |
6,497
-2,640
| -29% | -$124K |
|
350
MasTec
MTZ
$14B
| $303K | 0.03% |
15,276
+13,035
| +582% | +$259K |
|