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 | |
|---|---|---|---|---|---|---|
826
CALL
DHT Holdings
DHT
$2.96B
| $3.92M | 0.01% |
5,117
+4,439
| +655% | +$28.1K |
|
827
PUT
Idexx Laboratories
IDXX
$42.8B
| $3.92M | 0.01% |
162
-83
| -34% | -$21.7K |
|
828
PUT
Restaurant Brands International
QSR
$25.2B
| $3.89M | 0.01% |
973
+534
| +122% | +$30.2K |
|
829
Cigna
CI
$76.4B
| $3.88M | 0.01% |
+21,921
| New | +$4.25M |
|
|
GRUB
830
CALL
DELISTED
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
| $3.88M | 0.01% |
477
-386
| -45% | -$37.9K |
|
831
PUT
Valero Energy
VLO
$93B
| $3.88M | 0.01% |
855
-1,322
| -61% | -$96K |
|
832
CALL
Check Point Software Technologies
CHKP
$13.1B
| $3.87M | 0.01% |
385
+111
| +41% | +$11.9K |
|
|
GRMN
833
CALL
Garmin
GRMN
$46.4B
| $3.87M | 0.01% |
516
-251
| -33% | -$22.7K |
|
834
ProShares UltraPro Short S&P 500
SPXU
$437M
| $3.87M | 0.01% |
1,603
+809
| +102% | +$1.82M |
|
835
PUT
J.M. Smucker
SJM
$12.4B
| $3.86M | 0.01% |
348
-27
| -7% | -$2.89K |
|
836
CALL
Bausch Health
BHC
$1.69B
| $3.86M | 0.01% |
2,489
-538
| -18% | -$13K |
|
837
PUT
EPAM Systems
EPAM
$4.43B
| $3.84M | 0.01% |
207
+121
| +141% | +$26.1K |
|
838
ProShares Short S&P500
SH
$887M
| $3.84M | 0.01% |
34,703
+31,606
| +1,021% | +$3.19M |
|
839
PUT
Quest Diagnostics
DGX
$25.6B
| $3.84M | 0.01% |
478
+231
| +94% | +$23.9K |
|
840
PUT
Monster Beverage
MNST
$91.6B
| $3.84M | 0.01% |
1,364
+2
| +0.1% | +$64 |
|
841
lululemon athletica
LULU
$12.6B
| $3.83M | 0.01% |
20,211
-4,547
| -18% | -$1.02M |
|
842
CALL
Toyota
TM
$209B
| $3.83M | 0.01% |
319
+295
| +1,229% | +$39.4K |
|
843
iShares MSCI South Korea ETF
EWY
$23B
| $3.82M | 0.01% |
+81,355
| New | +$4.58M |
|
844
Marriott International
MAR
$96B
| $3.82M | 0.01% |
51,016
+41,298
| +425% | +$5.14M |
|
|
CGC
845
CALL
Canopy Growth
CGC
$380M
| $3.81M | 0.01% |
265
-111
| -30% | -$20.8K |
|
|
ICPT
846
PUT
DELISTED
Intercept Pharmaceuticals, Inc.
ICPT
| $3.81M | 0.01% |
605
-203
| -25% | -$18.2K |
|
|
HUYA
847
PUT
Huya Inc
HUYA
$549M
| $3.8M | 0.01% |
2,244
+811
| +57% | +$15.1K |
|
848
CALL
Ventas
VTR
$47.8B
| $3.8M | 0.01% |
1,419
+1,236
| +675% | +$61.4K |
|
849
Oracle
ORCL
$350B
| $3.79M | 0.01% |
+78,515
| New | +$4.05M |
|
850
CALL
KKR & Co
KKR
$85.9B
| $3.78M | 0.01% |
1,611
+1,402
| +671% | +$40.3K |
|
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.