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 | |
|---|---|---|---|---|---|---|
751
CALL
Blackrock
BLK
$162B
| $6.03M | 0.01% |
107
-36
| -25% | -$20.5K |
|
752
CALL
Linde
LIN
$235B
| $6.02M | 0.01% |
253
+15
| +6% | +$3.64K |
|
753
Darden Restaurants
DRI
$22.1B
| $6.02M | 0.01% |
59,748
+16,535
| +38% | +$1.37M |
|
754
PUT
Sunrun
RUN
$2.51B
| $6.02M | 0.01% |
781
+311
| +66% | +$14.6K |
|
755
CALL
Yum China
YUMC
$14.9B
| $6M | 0.01% |
1,133
+616
| +119% | +$32.6K |
|
|
GOOS
756
CALL
Canada Goose Holdings
GOOS
$909M
| $5.95M | 0.01% |
1,849
+374
| +25% | +$9.21K |
|
757
PUT
Hershey
HSY
$34.4B
| $5.95M | 0.01% |
415
+158
| +61% | +$22.4K |
|
758
PUT
Automatic Data Processing
ADP
$96.7B
| $5.94M | 0.01% |
426
+117
| +38% | +$16.4K |
|
759
ProShares UltraPro Short QQQ
SQQQ
$2.13B
| $5.94M | 0.01% |
+1,992
| New | +$6.91M |
|
760
Wells Fargo
WFC
$261B
| $5.92M | 0.01% |
252,026
+40,657
| +19% | +$1M |
|
761
PUT
BJs Wholesale Club
BJ
$11.6B
| $5.92M | 0.01% |
1,425
+911
| +177% | +$37.7K |
|
762
CALL
Kodak
KODK
$799M
| $5.91M | 0.01% |
6,705
+6,671
| +19,621% | +$52.1K |
|
|
MMP
763
CALL
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $5.91M | 0.01% |
1,728
+493
| +40% | +$19.5K |
|
764
CALL
Fox Class B
FOX
$20.9B
| $5.91M | 0.01% |
2,123
+1,740
| +454% | +$46.2K |
|
765
PUT
ProShares Ultra S&P500
SSO
$7.83B
| $5.9M | 0.01% |
7,232
-4,408
| -38% | -$79.3K |
|
766
Merck
MRK
$323B
| $5.88M | 0.01% |
74,349
+10,365
| +16% | +$812K |
|
|
IMMU
767
CALL
DELISTED
Immunomedics Inc
IMMU
| $5.88M | 0.01% |
692
-1,419
| -67% | -$71.8K |
|
768
CALL
Avis
CAR
$5.78B
| $5.87M | 0.01% |
2,231
-548
| -20% | -$16.5K |
|
769
CALL
Cardinal Health
CAH
$52.4B
| $5.86M | 0.01% |
1,248
+816
| +189% | +$41.9K |
|
770
CALL
Copart
CPRT
$25B
| $5.86M | 0.01% |
2,228
-644
| -22% | -$15.6K |
|
771
PUT
Guardant Health
GH
$20.2B
| $5.86M | 0.01% |
524
+307
| +141% | +$28.1K |
|
772
CALL
DexCom
DXCM
$27.3B
| $5.85M | 0.01% |
568
-540
| -49% | -$56.4K |
|
773
CALL
GDS Holdings
GDS
$6.6B
| $5.85M | 0.01% |
715
-193
| -21% | -$15.5K |
|
774
CALL
FirstEnergy
FE
$28.7B
| $5.84M | 0.01% |
2,033
+1,612
| +383% | +$50.6K |
|
775
Autodesk
ADSK
$43.1B
| $5.82M | 0.01% |
25,174
+1,814
| +8% | +$431K |
|
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.