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 | |
|---|---|---|---|---|---|---|
|
GRA
301
DELISTED
W.R. Grace & Co.
GRA
| $488K | 0.03% |
6,675
+399
| +6% | +$29.2K |
|
302
Lumentum
LITE
$10.4B
| $477K | 0.03% |
19,740
+15,875
| +411% | +$384K |
|
303
YPF
YPF
$10.3B
| $475K | 0.03% |
+24,756
| New | +$475K |
|
|
AMAG
304
DELISTED
AMAG Pharmaceuticals, Inc.
AMAG
| $473K | 0.03% |
19,775
+9,057
| +85% | +$217K |
|
305
Sunoco
SUN
$6.99B
| $472K | 0.03% |
+15,770
| New | +$472K |
|
306
Eastman Chemical
EMN
$7.91B
| $471K | 0.03% |
6,939
+600
| +9% | +$40.7K |
|
307
Entergy
ETR
$38.8B
| $467K | 0.03% |
+11,484
| New | +$467K |
|
|
DNKN
308
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $467K | 0.03% |
10,710
+4,637
| +76% | +$202K |
|
309
Genesis Energy
GEL
$2.01B
| $465K | 0.03% |
12,140
+4,562
| +60% | +$175K |
|
310
Golar LNG
GLNG
$4.22B
| $464K | 0.03% |
29,989
-4,300
| -13% | -$66.5K |
|
311
Molson Coors Class B
TAP
$9.86B
| $464K | 0.03% |
4,594
+2,015
| +78% | +$204K |
|
|
NE
312
DELISTED
Noble Corporation
NE
| $464K | 0.03% |
56,426
+35,511
| +170% | +$292K |
|
|
FDC
313
DELISTED
First Data Corporation
FDC
| $455K | 0.03% |
+41,174
| New | +$455K |
|
|
HIMX
314
Himax Technologies
HIMX
$1.47B
| $453K | 0.03% |
54,949
+33,910
| +161% | +$280K |
|
315
Lennar Class A
LEN
$36.9B
| $453K | 0.03% |
+10,340
| New | +$453K |
|
|
INFN
316
DELISTED
Infinera Corporation Common Stock
INFN
| $452K | 0.03% |
40,125
+15,305
| +62% | +$172K |
|
|
PF
317
DELISTED
Pinnacle Foods, Inc.
PF
| $452K | 0.03% |
9,776
-7,103
| -42% | -$328K |
|
|
XYZ
318
Block, Inc.
XYZ
$46.2B
| $451K | 0.03% |
+49,866
| New | +$451K |
|
319
Citizens Financial Group
CFG
$22.3B
| $445K | 0.03% |
+22,281
| New | +$445K |
|
320
Kroger
KR
$45B
| $445K | 0.03% |
12,114
-1,339
| -10% | -$49.2K |
|
321
Red Robin
RRGB
$110M
| $445K | 0.03% |
9,396
+8,993
| +2,232% | +$426K |
|
322
Avis
CAR
$5.58B
| $438K | 0.03% |
13,594
+4,879
| +56% | +$157K |
|
323
Transocean
RIG
$2.98B
| $435K | 0.03% |
36,638
-39,841
| -52% | -$473K |
|
324
Range Resources
RRC
$8.11B
| $435K | 0.03% |
10,092
+7,698
| +322% | +$332K |
|
325
Hologic
HOLX
$14.8B
| $432K | 0.03% |
12,490
+12,433
| +21,812% | +$430K |
|