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 | |
|---|---|---|---|---|---|---|
1751
PUT
Cognizant
CTSH
$21.5B
| $1.57M | ﹤0.01% |
227
-174
| -43% | -$11.3K |
|
1752
CALL
Texas Roadhouse
TXRH
$12.7B
| $1.57M | ﹤0.01% |
259
-51
| -16% | -$2.99K |
|
1753
PUT
Danaher
DHR
$135B
| $1.57M | ﹤0.01% |
82
-202
| -71% | -$35.9K |
|
|
AAWW
1754
PUT
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $1.57M | ﹤0.01% |
258
-35
| -12% | -$1.92K |
|
1755
PUT
LGI Homes
LGIH
$1.4B
| $1.57M | ﹤0.01% |
135
-13
| -9% | -$1.44K |
|
1756
CALL
Rapid7
RPD
$634M
| $1.57M | ﹤0.01% |
256
+10
| +4% | +$594 |
|
1757
CALL
Ovintiv
OVV
$17.5B
| $1.57M | ﹤0.01% |
1,921
+474
| +33% | +$4.89K |
|
1758
PUT
Group 1 Automotive
GPI
$3.94B
| $1.56M | ﹤0.01% |
177
-1
| -0.6% | -$85 |
|
1759
CALL
Kratos Defense & Security Solutions
KTOS
$8.88B
| $1.56M | ﹤0.01% |
811
+98
| +14% | +$1.81K |
|
1760
PUT
PennyMac Financial
PFSI
$4.38B
| $1.56M | ﹤0.01% |
269
+18
| +7% | +$892 |
|
1761
PUT
AMC Entertainment Holdings
AMC
$2.03B
| $1.56M | ﹤0.01% |
332
-182
| -35% | -$9.11K |
|
1762
CALL
Macerich
MAC
$7.32B
| $1.56M | ﹤0.01% |
2,300
+740
| +47% | +$5.82K |
|
1763
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $1.56M | ﹤0.01% |
125
-236
| -65% | -$29.5K |
|
1764
Cummins
CMI
$91.7B
| $1.56M | ﹤0.01% |
+7,379
| New | +$1.47M |
|
1765
CALL
Ryder
R
$10.3B
| $1.56M | ﹤0.01% |
369
+315
| +583% | +$12.7K |
|
1766
CALL
SL Green Realty
SLG
$3.88B
| $1.56M | ﹤0.01% |
347
+49
| +16% | +$2.27K |
|
1767
Mattel
MAT
$4.17B
| $1.55M | ﹤0.01% |
132,245
+47,885
| +57% | +$532K |
|
1768
PUT
BlackBerry
BB
$5.01B
| $1.55M | ﹤0.01% |
3,369
+735
| +28% | +$3.56K |
|
1769
PUT
Baker Hughes
BKR
$56.8B
| $1.55M | ﹤0.01% |
1,164
-75
| -6% | -$1.15K |
|
1770
CALL
Opko Health
OPK
$921M
| $1.54M | ﹤0.01% |
4,181
+2,907
| +228% | +$12.3K |
|
|
CLGX
1771
PUT
DELISTED
Corelogic, Inc.
CLGX
| $1.54M | ﹤0.01% |
228
-6
| -3% | -$404 |
|
1772
CALL
Sabre
SABR
$656M
| $1.54M | ﹤0.01% |
2,366
-663
| -22% | -$4.91K |
|
1773
Nutanix
NTNX
$14.9B
| $1.54M | ﹤0.01% |
69,319
-29,480
| -30% | -$674K |
|
|
SOGO
1774
CALL
DELISTED
Sogou Inc. American Depositary Shares, each representing one Class A Ordinary Share
SOGO
| $1.54M | ﹤0.01% |
1,730
+1,635
| +1,721% | +$12.5K |
|
1775
CALL
J.M. Smucker
SJM
$12.6B
| $1.54M | ﹤0.01% |
133
-79
| -37% | -$8.81K |
|
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.