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 | |
|---|---|---|---|---|---|---|
|
EXAS
451
CALL
DELISTED
Exact Sciences
EXAS
| $9.25M | 0.02% |
+1,595
| New | +$129K |
|
452
PUT
Digital Realty Trust
DLR
$66B
| $9.21M | 0.02% |
663
+140
| +27% | +$17.8K |
|
|
RDS.A
453
PUT
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $9.21M | 0.02% |
2,757
-620
| -18% | -$29K |
|
454
CALL
Dollar Tree
DLTR
$23.5B
| $9.19M | 0.02% |
1,251
+147
| +13% | +$12.5K |
|
455
PUT
Gaotu Techedu
GOTU
$396M
| $9.14M | 0.02% |
+2,159
| New | +$79.7K |
|
456
PUT
ConocoPhillips
COP
$145B
| $9.09M | 0.02% |
2,950
+1,221
| +71% | +$62.1K |
|
457
PUT
TAL Education Group
TAL
$5.73B
| $9.07M | 0.02% |
1,704
+362
| +27% | +$19.5K |
|
458
PUT
T-Mobile US
TMUS
$207B
| $9.03M | 0.02% |
1,076
-722
| -40% | -$61.1K |
|
459
PUT
Enphase Energy
ENPH
$5.22B
| $9.02M | 0.02% |
2,793
+836
| +43% | +$31.5K |
|
460
CALL
American Express
AXP
$238B
| $8.99M | 0.02% |
1,050
-28
| -3% | -$3.26K |
|
|
LK
461
DELISTED
Luckin Coffee Inc. American Depositary Shares
LK
| $8.86M | 0.02% |
+325,963
| New | +$12M |
|
462
PUT
Estee Lauder
EL
$29.9B
| $8.86M | 0.02% |
556
+134
| +32% | +$25.9K |
|
463
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $8.84M | 0.02% |
3,417
+1,438
| +73% | +$31.9K |
|
464
CALL
Royal Bank of Canada
RY
$294B
| $8.84M | 0.02% |
1,436
+814
| +131% | +$60.4K |
|
465
Expedia Group
EXPE
$31.3B
| $8.83M | 0.02% |
+156,855
| New | +$15.1M |
|
466
PUT
Novartis
NVS
$292B
| $8.76M | 0.02% |
1,063
+154
| +17% | +$13.7K |
|
467
CALL
MongoDB
MDB
$24.5B
| $8.7M | 0.02% |
637
-7
| -1% | -$1.03K |
|
468
CALL
Domino's
DPZ
$10.6B
| $8.69M | 0.02% |
268
+7
| +3% | +$2.16K |
|
|
FISV
469
CALL
Fiserv Inc
FISV
$26.8B
| $8.62M | 0.02% |
+908
| New | +$101K |
|
470
CALL
McKesson
MCK
$95.3B
| $8.62M | 0.02% |
637
+180
| +39% | +$26.4K |
|
471
CALL
Microchip Technology
MCHP
$46.2B
| $8.58M | 0.02% |
2,532
+348
| +16% | +$16.4K |
|
472
CALL
MetLife
MET
$60B
| $8.56M | 0.02% |
2,799
+426
| +18% | +$18.9K |
|
473
CALL
Virgin Galactic
SPCE
$343M
| $8.54M | 0.02% |
289
+182
| +170% | +$69.2K |
|
474
CALL
Workday
WDAY
$32.7B
| $8.5M | 0.02% |
653
-185
| -22% | -$31.2K |
|
475
CALL
GSK
GSK
$102B
| $8.49M | 0.02% |
1,794
+468
| +35% | +$25K |
|
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.