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 |
Apple
AAPL
|
+$32.1M |
| 2 |
Bausch Health
BHC
|
+$18.4M |
| 3 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 4 |
Chipotle Mexican Grill
CMG
|
+$14.9M |
| 5 |
Amazon
AMZN
|
+$13M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.7M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| 1 | Consumer Discretionary | 17.29% |
| 2 | Healthcare | 13.74% |
| 3 | Technology | 12.76% |
| 4 | Communication Services | 12.12% |
| 5 | Industrials | 10.49% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
251
Costco
COST
$422B
| $474K | 0.04% |
+2,940
| New | +$474K |
|
252
Insmed
INSM
$30.8B
| $465K | 0.04% |
25,643
+18,536
| +261% | +$336K |
|
|
SPLK
253
DELISTED
Splunk Inc
SPLK
| $465K | 0.04% |
7,916
-13,385
| -63% | -$786K |
|
|
MOMO
254
Hello Group
MOMO
$1.22B
| $462K | 0.04% |
28,881
+23,147
| +404% | +$370K |
|
|
SAFM
255
DELISTED
Sanderson Farms Inc
SAFM
| $460K | 0.04% |
5,940
+1,298
| +28% | +$101K |
|
256
Charter Communications
CHTR
$35.8B
| $459K | 0.04% |
2,507
-1,209
| -33% | -$221K |
|
257
Abercrombie & Fitch
ANF
$4.23B
| $456K | 0.04% |
16,917
-21,671
| -56% | -$584K |
|
258
Dollar Tree
DLTR
$20B
| $454K | 0.04% |
5,882
+3,298
| +128% | +$255K |
|
259
Eli Lilly
LLY
$684B
| $452K | 0.04% |
5,366
+2,685
| +100% | +$226K |
|
|
BZUN
260
Baozun
BZUN
$255M
| $451K | 0.04% |
+54,972
| New | +$451K |
|
261
Alaunos Therapeutics
TCRT
$5.51M
| $449K | 0.04% |
360
+123
| +52% | +$153K |
|
|
GNC
262
DELISTED
GNC Holdings, Inc.
GNC
| $448K | 0.04% |
+14,445
| New | +$448K |
|
|
IMOS
263
ChipMOS TECHNOLOGIES
IMOS
$685M
| $446K | 0.03% |
20,449
+9,445
| +86% | +$206K |
|
264
Reinsurance Group of America
RGA
$12.5B
| $445K | 0.03% |
5,210
+1,812
| +53% | +$155K |
|
|
BHI
265
DELISTED
Baker Hughes
BHI
| $445K | 0.03% |
+9,664
| New | +$445K |
|
266
Novo Nordisk
NVO
$275B
| $442K | 0.03% |
+15,250
| New | +$442K |
|
267
United States Natural Gas Fund
UNG
$582M
| $438K | 0.03% |
3,162
-526
| -14% | -$72.9K |
|
268
ProShares Short QQQ
PSQ
$536M
| $436K | 0.03% |
1,671
-160
| -9% | -$41.7K |
|
|
ADMS
269
DELISTED
Adamas Pharmaceuticals, Inc.
ADMS
| $432K | 0.03% |
+15,281
| New | +$432K |
|
|
JOYY
270
JOYY Inc. American Depositary Shares
JOYY
$3.26B
| $429K | 0.03% |
6,882
-8,865
| -56% | -$553K |
|
271
OSI Systems
OSIS
$4.08B
| $426K | 0.03% |
4,814
+2,556
| +113% | +$226K |
|
|
RHT
272
DELISTED
Red Hat Inc
RHT
| $423K | 0.03% |
+5,117
| New | +$423K |
|
273
Vishay Intertechnology
VSH
$2.14B
| $422K | 0.03% |
35,034
+34,554
| +7,199% | +$416K |
|
274
Applied Materials
AMAT
$151B
| $421K | 0.03% |
+22,561
| New | +$421K |
|
275
Dynavax Technologies
DVAX
$1.14B
| $421K | 0.03% |
17,462
+9,836
| +129% | +$237K |
|