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 |
LNKD
LinkedIn Corporation
LNKD
|
+$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$14.9M |
| 4 |
Biogen
BIIB
|
+$13.7M |
| 5 |
Visa
V
|
+$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
326
Snap-on
SNA
$16.9B
| $429K | 0.03% |
+2,721
| New | +$429K |
|
|
TFCFA
327
DELISTED
Twenty-First Century Fox, Inc. Class A
TFCFA
| $428K | 0.03% |
15,836
-514
| -3% | -$13.9K |
|
328
Immersion
IMMR
$226M
| $425K | 0.03% |
57,912
+40,542
| +233% | +$298K |
|
329
Prudential Financial
PRU
$37.2B
| $422K | 0.03% |
+5,926
| New | +$422K |
|
330
American Electric Power
AEP
$58B
| $418K | 0.03% |
+5,964
| New | +$418K |
|
331
Teucrium Corn Fund
CORN
$48.8M
| $417K | 0.03% |
20,362
+112
| +0.6% | +$2.29K |
|
332
Direxion Daily Energy Bull 2X Shares
ERX
$220M
| $417K | 0.03% |
1,355
-4,341
| -76% | -$1.34M |
|
333
ProShares UltraPro Russell2000
URTY
$394M
| $417K | 0.03% |
11,298
-6,802
| -38% | -$251K |
|
|
CXO
334
DELISTED
CONCHO RESOURCES INC.
CXO
| $417K | 0.03% |
+3,503
| New | +$417K |
|
|
CCMP
335
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $413K | 0.03% |
9,755
+8,784
| +905% | +$372K |
|
336
H&R Block
HRB
$6.92B
| $412K | 0.03% |
17,937
+15,861
| +764% | +$364K |
|
337
Steel Dynamics
STLD
$19.3B
| $412K | 0.03% |
+16,829
| New | +$412K |
|
338
Ligand Pharmaceuticals
LGND
$3.24B
| $410K | 0.03% |
5,516
+5,118
| +1,286% | +$380K |
|
339
Novartis
NVS
$248B
| $410K | 0.03% |
5,553
-3,831
| -41% | -$283K |
|
|
EXAM
340
DELISTED
EXAMWORKS GROUP INC COM STK (DE)
EXAM
| $407K | 0.03% |
+11,700
| New | +$407K |
|
341
National Beverage
FIZZ
$3.68B
| $406K | 0.03% |
+12,942
| New | +$406K |
|
342
SBA Communications
SBAC
$20.5B
| $406K | 0.03% |
3,763
+2,819
| +299% | +$304K |
|
|
HOT
343
DELISTED
STARWOOD HOTELS & RESORTS WORLDWIDE, INC.
HOT
| $406K | 0.03% |
+5,500
| New | +$406K |
|
344
Nasdaq
NDAQ
$54.6B
| $404K | 0.03% |
+18,780
| New | +$404K |
|
345
Comerica
CMA
$8.83B
| $403K | 0.03% |
9,815
-20,029
| -67% | -$822K |
|
346
J.M. Smucker
SJM
$11.8B
| $402K | 0.03% |
+2,640
| New | +$402K |
|
347
Radware
RDWR
$1.09B
| $401K | 0.03% |
35,656
+10,010
| +39% | +$113K |
|
348
PTC
PTC
$24.5B
| $399K | 0.03% |
10,630
+10,208
| +2,419% | +$383K |
|
349
Nokia
NOK
$24.6B
| $398K | 0.03% |
69,978
+68,360
| +4,225% | +$389K |
|
|
MKTO
350
DELISTED
MARKETO INC COM STK (DE)
MKTO
| $398K | 0.03% |
+11,457
| New | +$398K |
|