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 | Miscellaneous | 97.95% |
| 2 | Consumer Discretionary | 0.55% |
| 3 | Technology | 0.41% |
| 4 | Healthcare | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1051
CALL
T. Rowe Price
TROW
$23.4B
| $3.78M | 0.01% |
295
-144
| -33% | -$19K |
|
1052
CALL
Dentsply Sirona
XRAY
$2.27B
| $3.78M | 0.01% |
864
-863
| -50% | -$38.2K |
|
|
JWN
1053
PUT
DELISTED
Nordstrom
JWN
| $3.77M | 0.01% |
3,167
+798
| +34% | +$12K |
|
|
AXON
1054
CALL
Axon Enterprise
AXON
$41.9B
| $3.77M | 0.01% |
416
+70
| +20% | +$6.09K |
|
|
HOLX
1055
CALL
DELISTED
Hologic
HOLX
| $3.76M | 0.01% |
566
+465
| +460% | +$29.4K |
|
1056
CALL
Vanguard Dividend Appreciation ETF
VIG
$113B
| $3.76M | 0.01% |
292
+105
| +56% | +$13.2K |
|
1057
PUT
Quest Diagnostics
DGX
$26.2B
| $3.75M | 0.01% |
328
+8
| +3% | +$945 |
|
|
PPLI
1058
PUT
People Inc
PPLI
$2.9B
| $3.74M | 0.01% |
735
-356
| -33% | -$24.4K |
|
|
BLUE
1059
CALL
DELISTED
bluebird bio
BLUE
| $3.74M | 0.01% |
53
+12
| +29% | +$9.36K |
|
1060
Carnival Corporation Ltd
CCL
$32.2B
| $3.74M | 0.01% |
246,231
+245,531
| +35,076% | +$3.8M |
|
|
PLAN
1061
PUT
DELISTED
Anaplan, Inc.
PLAN
| $3.74M | 0.01% |
597
+127
| +27% | +$6.54K |
|
|
ANSS
1062
PUT
DELISTED
Ansys
ANSS
| $3.73M | 0.01% |
114
-4
| -3% | -$1.25K |
|
|
CMA
1063
PUT
DELISTED
Comerica
CMA
| $3.73M | 0.01% |
974
+284
| +41% | +$10.9K |
|
1064
PUT
Nutanix
NTNX
$18.4B
| $3.71M | 0.01% |
1,673
+520
| +45% | +$11.9K |
|
1065
PUT
Macy's
M
$6.06B
| $3.69M | 0.01% |
6,468
+1,725
| +36% | +$11.5K |
|
1066
PUT
Cheniere Energy
LNG
$60.3B
| $3.68M | 0.01% |
796
+490
| +160% | +$24.8K |
|
1067
PUT
Aptiv
APTV
$9.96B
| $3.68M | 0.01% |
401
-7
| -2% | -$587 |
|
1068
CALL
Dover
DOV
$26B
| $3.65M | 0.01% |
337
+33
| +11% | +$3.53K |
|
1069
PUT
Teucrium Soybean Fund
SOYB
$47M
| $3.65M | 0.01% |
2,576
+2,220
| +624% | +$32.7K |
|
1070
PUT
Equinix
EQIX
$102B
| $3.65M | 0.01% |
48
-29
| -38% | -$21.9K |
|
1071
PUT
Grand Canyon Education
LOPE
$3.98B
| $3.65M | 0.01% |
456
+427
| +1,472% | +$38.7K |
|
|
X
1072
CALL
DELISTED
US Steel
X
| $3.64M | 0.01% |
4,964
+624
| +14% | +$4.73K |
|
|
CYBR
1073
CALL
DELISTED
CyberArk
CYBR
| $3.63M | ﹤0.01% |
351
-87
| -20% | -$9.37K |
|
|
AVLR
1074
CALL
DELISTED
Avalara, Inc.
AVLR
| $3.63M | ﹤0.01% |
285
+41
| +17% | +$5.21K |
|
1075
VanEck Semiconductor ETF
SMH
$69B
| $3.63M | ﹤0.01% |
+41,632
| New | +$3.49M |
|
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 1,402 new, 3,135 increased, 3,121 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 Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- 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 1,402 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.