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 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
GAP
276
The Gap, Inc.
GAP
$8.96B
| $1.03M | ﹤0.01% |
35,725
-9,589
| -21% | -$276K |
|
277
ProShares Ultra Bloomberg Crude Oil
UCO
$362M
| $1.03M | ﹤0.01% |
4,566
-1,406
| -24% | -$316K |
|
|
CHL
278
DELISTED
China Mobile Limited
CHL
| $1.03M | ﹤0.01% |
20,955
+12,136
| +138% | +$594K |
|
279
Skechers
SKX
$9.5B
| $1.01M | ﹤0.01% |
36,293
-13,999
| -28% | -$391K |
|
280
Edison International
EIX
$20.5B
| $1.01M | ﹤0.01% |
14,942
+11,499
| +334% | +$778K |
|
|
CLVS
281
DELISTED
Clovis Oncology, Inc.
CLVS
| $1.01M | ﹤0.01% |
34,327
+23,227
| +209% | +$682K |
|
282
Ally Financial
ALLY
$12.7B
| $1M | ﹤0.01% |
37,930
-8,706
| -19% | -$230K |
|
283
Wyndham Hotels & Resorts
WH
$6.71B
| $1M | ﹤0.01% |
18,014
+5,565
| +45% | +$309K |
|
284
Omeros
OMER
$287M
| $995K | ﹤0.01% |
40,787
+14,464
| +55% | +$353K |
|
285
Goodyear
GT
$2.46B
| $994K | ﹤0.01% |
42,502
+8,569
| +25% | +$200K |
|
286
Clean Harbors
CLH
$12.8B
| $988K | ﹤0.01% |
13,810
+5,070
| +58% | +$363K |
|
287
AMC Entertainment Holdings
AMC
$1.45B
| $974K | ﹤0.01% |
4,753
+909
| +24% | +$186K |
|
288
Planet Fitness
PLNT
$8.75B
| $974K | ﹤0.01% |
+18,043
| New | +$974K |
|
289
Tyson Foods
TSN
$19.9B
| $972K | ﹤0.01% |
+16,338
| New | +$972K |
|
290
Zimmer Biomet
ZBH
$20.7B
| $969K | ﹤0.01% |
7,597
+7,407
| +3,898% | +$945K |
|
291
Direxion Daily 20+ Year Treasury Bull 3X Shares
TMF
$5.5B
| $960K | ﹤0.01% |
+5,537
| New | +$960K |
|
|
NEWR
292
DELISTED
New Relic, Inc.
NEWR
| $959K | ﹤0.01% |
10,178
-2,444
| -19% | -$230K |
|
293
Applied Optoelectronics
AAOI
$1.47B
| $956K | ﹤0.01% |
+38,791
| New | +$956K |
|
294
DuPont de Nemours
DD
$32.6B
| $952K | ﹤0.01% |
7,345
+5,214
| +245% | +$676K |
|
295
Ambarella
AMBA
$3.59B
| $951K | ﹤0.01% |
24,600
+18,691
| +316% | +$723K |
|
296
Corning
GLW
$61.8B
| $946K | ﹤0.01% |
26,814
+21,791
| +434% | +$769K |
|
297
McCormick & Company Non-Voting
MKC
$18.8B
| $943K | ﹤0.01% |
+14,326
| New | +$943K |
|
298
Fidelity National Information Services
FIS
$36B
| $937K | ﹤0.01% |
8,598
-13,092
| -60% | -$1.43M |
|
299
Albemarle
ALB
$9.65B
| $927K | ﹤0.01% |
+9,292
| New | +$927K |
|
300
Stryker
SYK
$150B
| $926K | ﹤0.01% |
5,213
-1,106
| -18% | -$196K |
|