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
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
126
PUT
Roku
ROKU
$21.4B
| $46.3M | 0.08% |
5,289
-1,410
| -21% | -$162K |
|
|
UCD
127
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $46.1M | 0.08% |
12,246
+6,075
| +98% | +$22.9M |
|
128
CALL
Walmart Inc
WMT
$878B
| $45.4M | 0.08% |
11,976
+1,956
| +20% | +$75.2K |
|
129
CALL
McDonald's
MCD
$188B
| $44.4M | 0.08% |
2,685
+566
| +27% | +$112K |
|
130
PUT
Autodesk
ADSK
$46B
| $44.3M | 0.08% |
2,839
+647
| +30% | +$119K |
|
131
PUT
Merck
MRK
$312B
| $43.5M | 0.08% |
5,919
+663
| +13% | +$52.1K |
|
132
CALL
Starbucks
SBUX
$119B
| $43.4M | 0.08% |
6,607
+3,400
| +106% | +$275K |
|
133
CALL
Pfizer
PFE
$142B
| $42.8M | 0.08% |
13,805
+8,925
| +183% | +$304K |
|
134
CALL
Chevron
CVX
$381B
| $42.3M | 0.07% |
5,843
+2,817
| +93% | +$278K |
|
135
CALL
Nike
NKE
$63.7B
| $42.2M | 0.07% |
5,099
+1,368
| +37% | +$127K |
|
136
CALL
3M
MMM
$89.1B
| $42.1M | 0.07% |
3,687
+1,589
| +76% | +$209K |
|
137
PUT
Baidu
BIDU
$36.8B
| $42.1M | 0.07% |
4,173
-672
| -14% | -$81.9K |
|
138
CALL
Lockheed Martin
LMT
$117B
| $42M | 0.07% |
1,240
+822
| +197% | +$323K |
|
139
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $42M | 0.07% |
128,920
+81,250
| +170% | +$1.89M |
|
140
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $41.5M | 0.07% |
3,981
+2,713
| +214% | +$283K |
|
141
PUT
JD.com
JD
$41.1B
| $41.5M | 0.07% |
10,237
+2,977
| +41% | +$119K |
|
142
PUT
lululemon athletica
LULU
$13.2B
| $41.1M | 0.07% |
2,169
+304
| +16% | +$68K |
|
143
CALL
PepsiCo
PEP
$184B
| $41M | 0.07% |
3,410
+1,567
| +85% | +$212K |
|
144
PUT
Charter Communications
CHTR
$15.9B
| $40.7M | 0.07% |
932
+116
| +14% | +$56.7K |
|
145
PUT
AbbVie
ABBV
$448B
| $40.2M | 0.07% |
5,274
-2,895
| -35% | -$247K |
|
146
PUT
Delta Air Lines
DAL
$55.6B
| $39.6M | 0.07% |
13,869
+11,202
| +420% | +$555K |
|
147
CALL
Target
TGT
$63.4B
| $38.8M | 0.07% |
4,177
+2,420
| +138% | +$269K |
|
148
CALL
Chipotle Mexican Grill
CMG
$42.5B
| $38.7M | 0.07% |
29,550
-6,450
| -18% | -$102K |
|
149
PUT
CVS Health
CVS
$137B
| $38.4M | 0.07% |
6,472
+1,966
| +44% | +$131K |
|
150
PUT
Comcast
CMCSA
$84.9B
| $38.2M | 0.07% |
11,112
+5,081
| +84% | +$214K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.