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 | |
|---|---|---|---|---|---|---|
526
PUT
Live Nation Entertainment
LYV
$41.4B
| $9.44M | 0.01% |
1,752
-1,078
| -38% | -$55.6K |
|
527
PUT
Universal Display
OLED
$3.81B
| $9.42M | 0.01% |
521
-354
| -40% | -$60.5K |
|
528
CALL
Lennar Class B
LEN.B
$19.4B
| $9.4M | 0.01% |
1,211
+925
| +323% | +$49.9K |
|
529
CALL
Northrop Grumman
NOC
$74.6B
| $9.4M | 0.01% |
298
+105
| +54% | +$34.2K |
|
530
PUT
Tyson Foods
TSN
$20.1B
| $9.4M | 0.01% |
1,580
+17
| +1% | +$1.05K |
|
531
PUT
Align Technology
ALGN
$12.4B
| $9.39M | 0.01% |
287
+75
| +35% | +$22.9K |
|
532
Berkshire Hathaway Class B
BRK.B
$1.06T
| $9.31M | 0.01% |
43,733
-33,934
| -44% | -$6.94M |
|
533
PUT
MetLife
MET
$60B
| $9.31M | 0.01% |
2,504
-846
| -25% | -$32.1K |
|
534
PUT
Analog Devices
ADI
$188B
| $9.3M | 0.01% |
797
+229
| +40% | +$26.8K |
|
535
CALL
Advance Auto Parts
AAP
$3.35B
| $9.3M | 0.01% |
606
+192
| +46% | +$28.9K |
|
|
536
CALL
Align Technology
ALGN
$12.4B
| $9.3M | 0.01% |
284
+27
| +11% | +$8.24K |
|
|
KSU
537
CALL
DELISTED
Kansas City Southern
KSU
| $9.29M | 0.01% |
514
+325
| +172% | +$56.3K |
|
538
UnitedHealth
UNH
$392B
| $9.28M | 0.01% |
+29,769
| New | +$9.14M |
|
539
PUT
BP
BP
$112B
| $9.24M | 0.01% |
5,291
-1,422
| -21% | -$30.8K |
|
540
PUT
NovoCure
NVCR
$1.8B
| $9.23M | 0.01% |
829
+233
| +39% | +$18.6K |
|
541
PUT
Dynatrace
DT
$12B
| $9.22M | 0.01% |
2,247
+2,138
| +1,961% | +$87.5K |
|
542
CALL
Agnico Eagle Mines
AEM
$73.5B
| $9.2M | 0.01% |
1,156
+69
| +6% | +$5.27K |
|
543
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$422M
| $9.2M | 0.01% |
16
-10
| -38% | -$75.2K |
|
|
IRBT
544
PUT
DELISTED
iRobot
IRBT
| $9.17M | 0.01% |
1,208
-174
| -13% | -$13.4K |
|
545
CALL
C.H. Robinson
CHRW
$24.4B
| $9.17M | 0.01% |
897
-36
| -4% | -$3.38K |
|
546
CALL
Microchip Technology
MCHP
$46.2B
| $9.17M | 0.01% |
1,784
+900
| +102% | +$46.8K |
|
547
PUT
GDS Holdings
GDS
$6.55B
| $9.16M | 0.01% |
1,119
-119
| -10% | -$9.53K |
|
548
CALL
XPO
XPO
$25.1B
| $9.15M | 0.01% |
3,126
-558
| -15% | -$16.1K |
|
|
CERN
549
PUT
DELISTED
Cerner Corp
CERN
| $9.15M | 0.01% |
1,266
+386
| +44% | +$27.5K |
|
550
PUT
Marathon Petroleum
MPC
$92.2B
| $9.12M | 0.01% |
3,108
+401
| +15% | +$14.1K |
|
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.