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 | |
|---|---|---|---|---|---|---|
1151
CALL
Ericsson
ERIC
$30.6B
| $3.23M | ﹤0.01% |
2,969
+2,317
| +355% | +$25.6K |
|
1152
CALL
NRG Energy
NRG
$30.2B
| $3.23M | ﹤0.01% |
1,051
+345
| +49% | +$11.4K |
|
1153
CALL
ArcelorMittal
MT
$49.9B
| $3.22M | ﹤0.01% |
2,429
-139
| -5% | -$1.68K |
|
|
FSKR
1154
CALL
DELISTED
FS KKR Capital Corp. II
FSKR
| $3.21M | ﹤0.01% |
+2,179
| New | +$31.2K |
|
1155
CALL
LKQ Corp
LKQ
$6.32B
| $3.19M | ﹤0.01% |
1,151
+333
| +41% | +$9.82K |
|
1156
PUT
Dave & Buster's
PLAY
$339M
| $3.19M | ﹤0.01% |
2,102
-83
| -4% | -$1.22K |
|
1157
PUT
F5
FFIV
$21.9B
| $3.18M | ﹤0.01% |
259
+128
| +98% | +$17.2K |
|
1158
PUT
Tower Semiconductor
TSEM
$29.4B
| $3.17M | ﹤0.01% |
1,738
+38
| +2% | +$766 |
|
1159
CALL
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $3.16M | ﹤0.01% |
253
-135
| -35% | -$16.9K |
|
|
ARNA
1160
CALL
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $3.16M | ﹤0.01% |
422
+367
| +667% | +$24.5K |
|
1161
CALL
Hyliion Holdings
HYLN
$735M
| $3.15M | ﹤0.01% |
+4,655
| New | +$152K |
|
1162
PUT
Red Rock Resorts
RRR
$3.67B
| $3.15M | ﹤0.01% |
1,841
+198
| +12% | +$2.88K |
|
1163
CALL
Inseego
INSG
$115M
| $3.14M | ﹤0.01% |
304
+125
| +70% | +$14.4K |
|
1164
CALL
US Foods
USFD
$21B
| $3.13M | ﹤0.01% |
1,411
+292
| +26% | +$6.57K |
|
|
BLUE
1165
PUT
DELISTED
bluebird bio
BLUE
| $3.13M | ﹤0.01% |
45
+19
| +73% | +$14.8K |
|
|
CLDR
1166
PUT
DELISTED
Cloudera, Inc.
CLDR
| $3.13M | ﹤0.01% |
2,878
+483
| +20% | +$5.6K |
|
1167
CALL
argenx
ARGX
$57.8B
| $3.12M | ﹤0.01% |
119
-92
| -44% | -$22.1K |
|
|
BNY
1168
CALL
Bank of New York Mellon
BNY
$109B
| $3.12M | ﹤0.01% |
909
-738
| -45% | -$26.9K |
|
1169
PUT
Kinder Morgan
KMI
$72.9B
| $3.12M | ﹤0.01% |
2,531
-1,300
| -34% | -$18.1K |
|
1170
CALL
Credit Acceptance
CACC
$6.2B
| $3.12M | ﹤0.01% |
92
-4
| -4% | -$1.68K |
|
1171
PUT
Cirrus Logic
CRUS
$6.74B
| $3.11M | ﹤0.01% |
461
+313
| +211% | +$19.6K |
|
|
FSKR
1172
PUT
DELISTED
FS KKR Capital Corp. II
FSKR
| $3.11M | ﹤0.01% |
+2,113
| New | +$30.2K |
|
1173
Datadog
DDOG
$87B
| $3.11M | ﹤0.01% |
30,418
-12,011
| -28% | -$1.05M |
|
1174
PUT
Fidelity National Information Services
FIS
$20.7B
| $3.11M | ﹤0.01% |
211
-473
| -69% | -$68.4K |
|
1175
PUT
Hewlett Packard
HPE
$63.1B
| $3.1M | ﹤0.01% |
3,314
+1,856
| +127% | +$17.7K |
|
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.