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 |
iShares Russell 2000 ETF
IWM
|
$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
$16.3M |
| 3 |
Walt Disney
DIS
|
$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
$10.4M |
| 5 |
Gilead Sciences
GILD
|
$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
$95.3M |
| 2 |
Apple
AAPL
|
$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
$20M |
| 4 |
IBM
IBM
|
$13.4M |
| 5 |
Baidu
BIDU
|
$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
Packaging Corp of America
PKG
$19.8B
| $447K | 0.03% |
7,432
+1,662
| +29% | +$100K |
|
252
iShares Core S&P Mid-Cap ETF
IJH
$101B
| $443K | 0.03% |
+16,245
| New | +$443K |
|
253
Teradata
TDC
$1.99B
| $442K | 0.03% |
15,273
+5,516
| +57% | +$160K |
|
254
Terex
TEX
$3.47B
| $441K | 0.03% |
+24,629
| New | +$441K |
|
255
Motorola Solutions
MSI
$79.8B
| $436K | 0.03% |
6,379
+5,202
| +442% | +$356K |
|
|
NS
256
DELISTED
NuStar Energy L.P.
NS
| $436K | 0.03% |
9,743
+9,642
| +9,547% | +$431K |
|
257
Timken Company
TKR
$5.42B
| $425K | 0.03% |
+15,490
| New | +$425K |
|
258
Five Below
FIVE
$8.46B
| $423K | 0.03% |
12,599
+9,409
| +295% | +$316K |
|
259
Clorox
CLX
$15.5B
| $420K | 0.03% |
+3,636
| New | +$420K |
|
260
Super Micro Computer
SMCI
$24B
| $415K | 0.03% |
152,470
+53,870
| +55% | +$147K |
|
|
CAB
261
DELISTED
Cabela's Inc
CAB
| $415K | 0.03% |
+9,120
| New | +$415K |
|
|
FGP
262
DELISTED
Ferrellgas Partners, L.P.
FGP
| $413K | 0.03% |
20,958
+12,014
| +134% | +$237K |
|
263
Consolidated Edison
ED
$35.4B
| $411K | 0.03% |
6,160
-11,701
| -66% | -$781K |
|
|
DISH
264
DELISTED
DISH Network Corp.
DISH
| $408K | 0.03% |
6,996
+3,881
| +125% | +$226K |
|
265
Golar LNG
GLNG
$4.52B
| $407K | 0.03% |
14,622
+8,125
| +125% | +$226K |
|
266
iShares Silver Trust
SLV
$20.1B
| $407K | 0.03% |
29,398
-31,567
| -52% | -$437K |
|
|
RAD
267
DELISTED
Rite Aid Corporation
RAD
| $406K | 0.03% |
+3,346
| New | +$406K |
|
268
Diageo
DEO
$61.3B
| $403K | 0.03% |
3,746
-9,349
| -71% | -$1.01M |
|
269
Sarepta Therapeutics
SRPT
$1.96B
| $403K | 0.03% |
12,561
+3,563
| +40% | +$114K |
|
|
MLNX
270
DELISTED
Mellanox Technologies, Ltd.
MLNX
| $403K | 0.03% |
10,665
+7,018
| +192% | +$265K |
|
271
Capital One
COF
$142B
| $402K | 0.03% |
+5,547
| New | +$402K |
|
272
ProShares UltraShort Financials
SKF
$10.2M
| $398K | 0.03% |
472
+463
| +5,144% | +$390K |
|
273
Direxion Daily FTSE China Bear 3X Shares
YANG
$185M
| $395K | 0.03% |
69
+54
| +360% | +$309K |
|
|
BMR
274
DELISTED
BIOMED REALTY TRUST INC
BMR
| $395K | 0.03% |
+19,817
| New | +$395K |
|
275
General Dynamics
GD
$86.8B
| $393K | 0.03% |
+2,849
| New | +$393K |
|