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 |
Gilead Sciences
GILD
|
$16.8M |
| 2 |
Apple
AAPL
|
$16.2M |
| 3 |
Booking.com
BKNG
|
$15.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$15.3M |
| 5 |
Wells Fargo
WFC
|
$11.9M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$38M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
$11.5M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
$10.5M |
Sector Composition
| 1 | Communication Services | 15.83% |
| 2 | Healthcare | 15.63% |
| 3 | Consumer Discretionary | 12.92% |
| 4 | Technology | 11.44% |
| 5 | Financials | 8.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
KS
326
DELISTED
KapStone Paper and Pack Corp.
KS
| $427K | 0.03% |
22,596
+8,607
| +62% | +$163K |
|
327
National Healthcare
NHC
$1.78B
| $425K | 0.03% |
6,447
+3,982
| +162% | +$263K |
|
328
SolarEdge
SEDG
$2.04B
| $425K | 0.03% |
24,720
+22,218
| +888% | +$382K |
|
329
WEX
WEX
$5.87B
| $424K | 0.03% |
+3,926
| New | +$424K |
|
|
GRUB
330
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $424K | 0.03% |
4,937
+373
| +8% | +$32K |
|
331
Equinix
EQIX
$75.7B
| $422K | 0.03% |
+1,174
| New | +$422K |
|
|
AMAG
332
DELISTED
AMAG Pharmaceuticals, Inc.
AMAG
| $421K | 0.03% |
17,181
-2,594
| -13% | -$63.6K |
|
|
APC
333
DELISTED
Anadarko Petroleum
APC
| $418K | 0.03% |
+6,607
| New | +$418K |
|
334
Canadian Pacific Kansas City
CP
$70.3B
| $409K | 0.03% |
+13,425
| New | +$409K |
|
|
UN
335
DELISTED
Unilever NV New York Registry Shares
UN
| $409K | 0.03% |
8,876
-5,580
| -39% | -$257K |
|
336
Ligand Pharmaceuticals
LGND
$3.25B
| $406K | 0.03% |
6,378
+862
| +16% | +$54.9K |
|
|
GK
337
DELISTED
G&K Services Inc
GK
| $403K | 0.03% |
+4,228
| New | +$403K |
|
338
Capital One
COF
$142B
| $402K | 0.03% |
5,608
-4,096
| -42% | -$294K |
|
339
iShares Preferred and Income Securities ETF
PFF
$14.5B
| $401K | 0.03% |
+10,159
| New | +$401K |
|
|
AMID
340
DELISTED
American Midstream Partners, LP
AMID
| $401K | 0.03% |
+27,211
| New | +$401K |
|
|
ONIT
341
Onity Group Inc.
ONIT
$341M
| $400K | 0.03% |
7,269
+2,448
| +51% | +$135K |
|
|
TAHO
342
DELISTED
Tahoe Resources Inc
TAHO
| $399K | 0.03% |
31,160
+30,220
| +3,215% | +$387K |
|
343
BGC Group
BGC
$4.71B
| $395K | 0.03% |
70,354
+44,860
| +176% | +$252K |
|
|
HDS
344
DELISTED
HD Supply Holdings, Inc.
HDS
| $394K | 0.03% |
12,337
+6,146
| +99% | +$196K |
|
|
TSL
345
DELISTED
Trina Solar Limited
TSL
| $394K | 0.03% |
38,518
+4,018
| +12% | +$41.1K |
|
346
Coherent
COHR
$15.2B
| $392K | 0.03% |
+16,129
| New | +$392K |
|
|
PVG
347
DELISTED
PRETIUM RESOURCES INC.
PVG
| $392K | 0.03% |
38,265
+3,473
| +10% | +$35.6K |
|
348
Direxion Daily 20+ Year Treasury Bull 3X Shares
TMF
$5.29B
| $391K | 0.03% |
1,414
-440
| -24% | -$122K |
|
349
Ford
F
$46.7B
| $388K | 0.03% |
32,215
-12,288
| -28% | -$148K |
|
350
Cameco
CCJ
$33B
| $387K | 0.03% |
45,273
+30,217
| +201% | +$258K |
|