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 | |
|---|---|---|---|---|---|---|
3276
ProShares UltraShort Real Estate
SRS
$14.8M
| $393K | ﹤0.01% |
3,324
+1,169
| +54% | +$140K |
|
|
CHUY
3277
CALL
DELISTED
Chuy's Holdings, Inc. Common Stock
CHUY
| $393K | ﹤0.01% |
201
+9
| +5% | +$164 |
|
3278
CALL
Flowserve
FLS
$9.29B
| $392K | ﹤0.01% |
144
+41
| +40% | +$1.2K |
|
3279
CALL
Insperity
NSP
$1.92B
| $392K | ﹤0.01% |
60
-98
| -62% | -$6.54K |
|
3280
Unity
U
$13.3B
| $392K | ﹤0.01% |
+4,492
| New | +$379K |
|
3281
PUT
Aaon
AAON
$8.27B
| $391K | ﹤0.01% |
+98
| New | +$3.76K |
|
3282
PUT
Arch Capital
ACGL
$36.3B
| $391K | ﹤0.01% |
134
+15
| +13% | +$457 |
|
|
DCH
3283
PUT
Dauch Corp
DCH
$1.32B
| $391K | ﹤0.01% |
678
+463
| +215% | +$3.31K |
|
3284
Celsius Holdings
CELH
$7.36B
| $391K | ﹤0.01% |
+51,666
| New | +$312K |
|
3285
CALL
The GEO Group
GEO
$4.13B
| $391K | ﹤0.01% |
345
+85
| +33% | +$948 |
|
3286
CALL
Murphy Oil
MUR
$5.38B
| $391K | ﹤0.01% |
439
-288
| -40% | -$3.7K |
|
3287
CALL
Vir Biotechnology
VIR
$1.48B
| $391K | ﹤0.01% |
114
-20
| -15% | -$861 |
|
|
GRMN
3288
Garmin
GRMN
$46.8B
| $390K | ﹤0.01% |
+4,114
| New | +$411K |
|
3289
CALL
Sempra
SRE
$59.7B
| $390K | ﹤0.01% |
66
-178
| -73% | -$11K |
|
|
LX
3290
LexinFintech Holdings
LX
$241M
| $389K | ﹤0.01% |
56,856
+56,851
| +1,137,020% | +$494K |
|
|
GAN
3291
PUT
DELISTED
GAN Ltd
GAN
| $388K | ﹤0.01% |
230
+82
| +55% | +$1.74K |
|
3292
ProShares Ultra FTSE China 50 of PROSHARES TRUST
XPP
$9.13M
| $388K | ﹤0.01% |
+6,708
| New | +$410K |
|
|
AVTA
3293
PUT
DELISTED
Avantax, Inc. Common Stock
AVTA
| $388K | ﹤0.01% |
412
+411
| +41,100% | +$4.55K |
|
3294
PUT
Ambev
ABEV
$47.4B
| $387K | ﹤0.01% |
1,715
-1,141
| -40% | -$2.86K |
|
3295
PUT
CenterPoint Energy
CNP
$28.8B
| $387K | ﹤0.01% |
200
-990
| -83% | -$19.4K |
|
3296
Banco Bradesco
BBD
$38.5B
| $386K | ﹤0.01% |
136,430
+42,388
| +45% | +$139K |
|
|
BRFS
3297
PUT
DELISTED
BRF SA
BRFS
| $386K | ﹤0.01% |
1,179
-290
| -20% | -$1.11K |
|
3298
CALL
uniQure
QURE
$2.63B
| $386K | ﹤0.01% |
105
-6
| -5% | -$246 |
|
3299
CALL
Sanmina
SANM
$11.2B
| $386K | ﹤0.01% |
143
+139
| +3,475% | +$3.78K |
|
|
LCI
3300
PUT
DELISTED
Lannett Company, Inc.
LCI
| $386K | ﹤0.01% |
158
-16
| -9% | -$379 |
|
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.