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 | |
|---|---|---|---|---|---|---|
276
Advance Auto Parts
AAP
$3.63B
| $542K | 0.04% |
+3,354
| New | +$542K |
|
277
Dynavax Technologies
DVAX
$1.18B
| $539K | 0.04% |
36,972
+7,525
| +26% | +$110K |
|
278
Bread Financial
BFH
$3.09B
| $538K | 0.04% |
+3,442
| New | +$538K |
|
|
MDVN
279
DELISTED
MEDIVATION, INC.
MDVN
| $534K | 0.04% |
+8,862
| New | +$534K |
|
280
Sleep Number
SNBR
$220M
| $532K | 0.04% |
24,896
+16,037
| +181% | +$343K |
|
281
Direxion Daily 20+ Year Treasury Bull 3X Shares
TMF
$5.29B
| $527K | 0.04% |
1,854
+1,170
| +171% | +$333K |
|
282
iShares JPMorgan USD Emerging Markets Bond ETF
EMB
$13.5B
| $526K | 0.04% |
+4,576
| New | +$526K |
|
283
Energous
WATT
$9.88M
| $522K | 0.03% |
67
+53
| +379% | +$413K |
|
|
ISEE
284
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $521K | 0.03% |
+10,214
| New | +$521K |
|
|
JWN
285
DELISTED
Nordstrom
JWN
| $517K | 0.03% |
+13,591
| New | +$517K |
|
286
Agios Pharmaceuticals
AGIO
$2.09B
| $515K | 0.03% |
12,301
+2,368
| +24% | +$99.1K |
|
287
U-Haul Holding Co
UHAL
$11.2B
| $515K | 0.03% |
13,750
+11,420
| +490% | +$428K |
|
288
Ferrari
RACE
$87.1B
| $513K | 0.03% |
12,545
+11,389
| +985% | +$466K |
|
289
Direxion Daily Financial Bear 3x Shares
FAZ
$108M
| $507K | 0.03% |
336
-523
| -61% | -$789K |
|
290
VeriSign
VRSN
$26.2B
| $506K | 0.03% |
5,853
+3,629
| +163% | +$314K |
|
291
MiMedx Group
MDXG
$1.06B
| $503K | 0.03% |
63,063
+20,380
| +48% | +$163K |
|
292
Sinclair Inc
SBGI
$964M
| $503K | 0.03% |
+16,851
| New | +$503K |
|
|
GWPH
293
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $503K | 0.03% |
+5,494
| New | +$503K |
|
|
WUBA
294
DELISTED
58.COM INC
WUBA
| $500K | 0.03% |
10,899
+5,881
| +117% | +$270K |
|
|
GAP
295
The Gap, Inc.
GAP
$8.83B
| $498K | 0.03% |
+23,511
| New | +$498K |
|
296
Vanguard Growth ETF
VUG
$186B
| $495K | 0.03% |
4,626
+1,332
| +40% | +$143K |
|
297
OneMain Financial
OMF
$7.31B
| $494K | 0.03% |
21,671
+18,490
| +581% | +$421K |
|
298
Air Lease Corp
AL
$7.12B
| $493K | 0.03% |
18,417
+2,172
| +13% | +$58.1K |
|
299
Deere & Co
DE
$128B
| $493K | 0.03% |
6,095
-29,038
| -83% | -$2.35M |
|
300
Voya Financial
VOYA
$7.38B
| $489K | 0.03% |
19,756
+6,565
| +50% | +$162K |
|