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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
126
PUT
Carvana
CVNA
$47B
| $66.6M | 0.09% |
14,935
+5,920
| +66% | +$210K |
|
127
PUT
Nike
NKE
$63.7B
| $66.5M | 0.09% |
5,296
+1,518
| +40% | +$163K |
|
|
128
CALL
ExxonMobil
XOM
$629B
| $66.5M | 0.09% |
19,364
+1,979
| +11% | +$80.9K |
|
129
CALL
Chevron
CVX
$381B
| $65.2M | 0.09% |
9,056
+1,619
| +22% | +$136K |
|
130
CALL
Chipotle Mexican Grill
CMG
$42.5B
| $65.2M | 0.09% |
26,200
-2,400
| -8% | -$57.8K |
|
131
PUT
Wayfair
W
$11.2B
| $63.5M | 0.09% |
2,181
-2,152
| -50% | -$589K |
|
132
CALL
Peloton Interactive
PTON
$2.82B
| $63.1M | 0.09% |
6,356
+3,153
| +98% | +$232K |
|
|
133
CALL
TSMC
TSM
$2.2T
| $62.9M | 0.09% |
7,755
+6,341
| +448% | +$482K |
|
134
PUT
Lowe's Companies
LOW
$115B
| $62.8M | 0.09% |
3,784
+1,501
| +66% | +$231K |
|
135
PUT
CrowdStrike
CRWD
$195B
| $61.9M | 0.08% |
18,032
+6,972
| +63% | +$203K |
|
136
PUT
Pfizer
PFE
$142B
| $60.9M | 0.08% |
17,476
+3,294
| +23% | +$115K |
|
137
CALL
Baidu
BIDU
$36.8B
| $60.6M | 0.08% |
4,785
+2,254
| +89% | +$279K |
|
138
CALL
Goldman Sachs
GS
$320B
| $59M | 0.08% |
2,936
-570
| -16% | -$116K |
|
139
PUT
Caterpillar
CAT
$410B
| $58.7M | 0.08% |
3,937
+1,052
| +36% | +$148K |
|
140
PUT
Merck
MRK
$312B
| $58.6M | 0.08% |
7,407
+3,867
| +109% | +$303K |
|
141
PUT
Proshares UltraShort Technology
REW
$3.27M
| $58.4M | 0.08% |
1,540
+1,296
| +531% | +$442K |
|
142
PUT
NIO
NIO
$12B
| $58M | 0.08% |
27,335
+12,097
| +79% | +$186K |
|
143
CALL
Wells Fargo
WFC
$266B
| $57.9M | 0.08% |
24,612
+7,498
| +44% | +$185K |
|
144
CALL
PepsiCo
PEP
$184B
| $56.9M | 0.08% |
4,102
+1,612
| +65% | +$219K |
|
145
PUT
Vanguard S&P 500 ETF
VOO
$981B
| $56.6M | 0.08% |
4,117
+390
| +10% | +$119K |
|
|
146
Tesla
TSLA
$1.42T
| $56.2M | 0.08% |
392,907
-637,473
| -62% | -$75.3M |
|
147
CALL
lululemon athletica
LULU
$13.2B
| $55.3M | 0.08% |
1,678
-344
| -17% | -$115K |
|
|
148
PUT
Chevron
CVX
$381B
| $55.2M | 0.08% |
7,670
+3,908
| +104% | +$329K |
|
|
149
CALL
NIO
NIO
$12B
| $55.1M | 0.07% |
25,947
+17,416
| +204% | +$268K |
|
|
ATVI
150
PUT
DELISTED
Activision Blizzard
ATVI
| $54.3M | 0.07% |
6,704
+3,868
| +136% | +$314K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.