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 | Miscellaneous | 97.95% |
| 2 | Consumer Discretionary | 0.55% |
| 3 | Technology | 0.41% |
| 4 | Healthcare | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
176
CALL
IBM
IBM
$221B
| $43.9M | 0.06% |
3,772
-1,571
| -29% | -$185K |
|
177
PUT
Etsy
ETSY
$7.02B
| $43.5M | 0.06% |
3,573
+488
| +16% | +$57.1K |
|
178
CALL
Oracle
ORCL
$457B
| $43.4M | 0.06% |
7,263
+2,632
| +57% | +$150K |
|
179
CALL
Take-Two Interactive
TTWO
$40.1B
| $43.3M | 0.06% |
2,623
+1,693
| +182% | +$275K |
|
180
CALL
Royal Caribbean
RCL
$70.9B
| $43.3M | 0.06% |
6,685
+996
| +18% | +$58.6K |
|
181
CALL
Wynn Resorts
WYNN
$9.43B
| $43.1M | 0.06% |
6,004
+1,365
| +29% | +$108K |
|
182
PUT
Autodesk
ADSK
$45.5B
| $42.8M | 0.06% |
1,853
-826
| -31% | -$196K |
|
183
CALL
Snap
SNAP
$9.25B
| $42.6M | 0.06% |
16,333
-7,169
| -31% | -$167K |
|
184
PUT
Twilio
TWLO
$35.8B
| $42.4M | 0.06% |
1,717
+259
| +18% | +$63.9K |
|
185
CALL
Comcast
CMCSA
$94B
| $42.3M | 0.06% |
9,153
-491
| -5% | -$21.3K |
|
|
B
186
PUT
Barrick Mining
B
$73.7B
| $42.2M | 0.06% |
15,022
+2,733
| +22% | +$77.8K |
|
187
PUT
Baidu
BIDU
$33.7B
| $42.2M | 0.06% |
3,331
-407
| -11% | -$50.4K |
|
188
PUT
Trade Desk
TTD
$6.78B
| $42M | 0.06% |
8,090
-9,540
| -54% | -$436K |
|
189
CALL
CVS Health
CVS
$124B
| $41.5M | 0.06% |
7,102
+2,060
| +41% | +$128K |
|
190
PUT
Marriott International
MAR
$87.8B
| $41.3M | 0.06% |
4,457
-912
| -17% | -$86K |
|
191
CALL
Target
TGT
$74.7B
| $41.2M | 0.06% |
2,615
-117
| -4% | -$16.1K |
|
192
CALL
Intuitive Surgical
ISRG
$130B
| $40.9M | 0.06% |
1,728
-225
| -12% | -$50.5K |
|
193
CALL
DraftKings
DKNG
$11.9B
| $40.6M | 0.06% |
6,899
+849
| +14% | +$33K |
|
194
CALL
Abbott
ABT
$187B
| $39.9M | 0.05% |
3,666
-992
| -21% | -$101K |
|
195
CALL
Bristol-Myers Squibb
BMY
$136B
| $39.8M | 0.05% |
6,696
-1,991
| -23% | -$120K |
|
196
CALL
Gaotu Techedu
GOTU
$517M
| $39.4M | 0.05% |
4,375
+2,831
| +183% | +$252K |
|
|
197
CALL
Marriott International
MAR
$87.8B
| $39.1M | 0.05% |
4,223
+2,390
| +130% | +$225K |
|
198
CALL
United Airlines
UAL
$36.2B
| $39M | 0.05% |
11,221
-28
| -0.2% | -$969 |
|
|
199
PUT
IBM
IBM
$221B
| $38.9M | 0.05% |
3,346
+893
| +36% | +$105K |
|
|
200
TSMC
TSM
$2.22T
| $38.5M | 0.05% |
475,152
+365,620
| +334% | +$27.8M |
|
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 1,402 new, 3,135 increased, 3,121 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 Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- 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 1,402 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.