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 | |
|---|---|---|---|---|---|---|
|
LSI
601
PUT
DELISTED
Life Storage, Inc.
LSI
| $6.13M | 0.01% |
972
+193
| +25% | +$13.8K |
|
602
CALL
Palo Alto Networks
PANW
$273B
| $6.12M | 0.01% |
2,238
-918
| -29% | -$32K |
|
603
CALL
Rio Tinto
RIO
$150B
| $6.1M | 0.01% |
1,339
+411
| +44% | +$21.1K |
|
|
TYNS
604
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $6.09M | 0.01% |
3,764
+2,962
| +369% | +$4.79M |
|
605
McDonald's
MCD
$187B
| $6.09M | 0.01% |
36,824
+30,588
| +491% | +$6.03M |
|
606
CALL
eHealth
EHTH
$44.8M
| $6.08M | 0.01% |
432
-200
| -32% | -$22.9K |
|
607
PUT
T. Rowe Price
TROW
$24.9B
| $6.07M | 0.01% |
622
+384
| +161% | +$47K |
|
608
PUT
CME Group
CME
$90.1B
| $6.07M | 0.01% |
351
-202
| -37% | -$40.2K |
|
|
WORK
609
DELISTED
Slack Technologies, Inc.
WORK
| $6.06M | 0.01% |
225,838
+150,227
| +199% | +$3.62M |
|
610
CALL
Simon Property Group
SPG
$73.4B
| $6.05M | 0.01% |
1,103
+595
| +117% | +$71.1K |
|
611
PUT
SBA Communications
SBAC
$18.9B
| $6.02M | 0.01% |
223
-194
| -47% | -$51.2K |
|
612
PUT
Vale
VALE
$63.2B
| $5.97M | 0.01% |
7,205
+4,925
| +216% | +$53.6K |
|
613
CALL
Eversource Energy
ES
$28B
| $5.97M | 0.01% |
763
+138
| +22% | +$12.1K |
|
614
CALL
PNC Financial Services
PNC
$101B
| $5.96M | 0.01% |
623
-465
| -43% | -$62.5K |
|
615
CALL
Dropbox
DBX
$6.69B
| $5.95M | 0.01% |
3,287
+1,716
| +109% | +$31.2K |
|
616
Invesco CurrencyShares Japanese Yen Trust
FXY
$425M
| $5.94M | 0.01% |
+67,402
| New | +$5.87M |
|
617
CALL
Sherwin-Williams
SHW
$78.9B
| $5.93M | 0.01% |
387
+339
| +706% | +$61.2K |
|
618
PUT
Freeport-McMoran
FCX
$93.4B
| $5.92M | 0.01% |
8,775
+5,862
| +201% | +$61.3K |
|
619
CALL
DuPont de Nemours
DD
$18.9B
| $5.89M | 0.01% |
1,491
+96
| +7% | +$5.87K |
|
620
PUT
BioMarin Pharmaceuticals
BMRN
$11.3B
| $5.89M | 0.01% |
697
+228
| +49% | +$19.6K |
|
|
621
PUT
Sherwin-Williams
SHW
$78.9B
| $5.88M | 0.01% |
384
-129
| -25% | -$23.3K |
|
622
PUT
US Bancorp Series B Preferred Stock
USB.PRH
$747M
| $5.88M | 0.01% |
1,707
-608
| -26% | -$12.8K |
|
623
CALL
Illinois Tool Works
ITW
$78.8B
| $5.87M | 0.01% |
413
-336
| -45% | -$57.1K |
|
624
CALL
PG&E
PCG
$39.9B
| $5.85M | 0.01% |
6,507
-5,235
| -45% | -$69.5K |
|
625
PUT
Copart
CPRT
$25.2B
| $5.84M | 0.01% |
3,408
+1,996
| +141% | +$44.4K |
|
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.