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 | |
|---|---|---|---|---|---|---|
3776
iRhythm Holdings
IRTC
$3.86B
| $260K | ﹤0.01% |
+1,096
| New | +$194K |
|
3777
CALL
NGL Energy Partners
NGL
$1.87B
| $260K | ﹤0.01% |
657
-1,073
| -62% | -$4.41K |
|
3778
PUT
Shutterstock
SSTK
$220M
| $260K | ﹤0.01% |
50
-20
| -29% | -$950 |
|
3779
CALL
AXIS Capital
AXS
$8.79B
| $259K | ﹤0.01% |
59
-28
| -32% | -$1.22K |
|
3780
CALL
Comtech Telecommunications
CMTL
$51.5M
| $259K | ﹤0.01% |
185
+34
| +23% | +$544 |
|
3781
CALL
Pinnacle Financial Partners Inc
PNFP
$15.9B
| $259K | ﹤0.01% |
73
-48
| -40% | -$1.91K |
|
3782
PUT
Protolabs
PRLB
$1.78B
| $259K | ﹤0.01% |
20
+6
| +43% | +$789 |
|
3783
CALL
Vanguard ESG US Corporate Bond ETF
VCEB
$1.18B
| $259K | ﹤0.01% |
+15
| New | +$1.12K |
|
|
DBD
3784
PUT
DELISTED
Diebold Nixdorf Incorporated
DBD
| $259K | ﹤0.01% |
340
-82
| -19% | -$603 |
|
|
HUD
3785
PUT
DELISTED
Hudson Ltd. Class A Common Shares
HUD
| $259K | ﹤0.01% |
+341
| New | +$2.07K |
|
3786
CALL
Bankunited
BKU
$3.41B
| $258K | ﹤0.01% |
118
-62
| -34% | -$1.31K |
|
3787
HP
HPQ
$25.9B
| $258K | ﹤0.01% |
13,632
+13,532
| +13,532% | +$247K |
|
3788
CALL
NNN REIT
NNN
$9.37B
| $258K | ﹤0.01% |
75
-49
| -40% | -$1.75K |
|
3789
Smith & Wesson
SWBI
$657M
| $258K | ﹤0.01% |
16,638
+764
| +5% | +$13.5K |
|
3790
Hercules Capital
HTGC
$3.04B
| $257K | ﹤0.01% |
22,297
-24,154
| -52% | -$269K |
|
3791
CALL
Amplify Online Retail ETF
IBUY
$113M
| $257K | ﹤0.01% |
92
-17
| -16% | -$1.45K |
|
3792
PUT
KBR
KBR
$4.74B
| $257K | ﹤0.01% |
115
+23
| +25% | +$534 |
|
3793
PUT
Synaptics
SYNA
$4.33B
| $257K | ﹤0.01% |
32
+17
| +113% | +$1.34K |
|
|
QVCGA
3794
CALL
DELISTED
QVC Group Inc Series A
QVCGA
| $257K | ﹤0.01% |
11
+4
| +57% | +$1.89K |
|
|
MAG
3795
DELISTED
MAG Silver
MAG
| $256K | ﹤0.01% |
+15,745
| New | +$252K |
|
3796
CALL
Pentair
PNR
$10.8B
| $256K | ﹤0.01% |
56
-9
| -14% | -$392 |
|
3797
Virtu Financial
VIRT
$5.11B
| $256K | ﹤0.01% |
11,156
+5,468
| +96% | +$137K |
|
3798
B2Gold
BTG
$5.12B
| $255K | ﹤0.01% |
39,250
+4,442
| +13% | +$28.9K |
|
3799
PUT
EnerSys
ENS
$6.69B
| $255K | ﹤0.01% |
38
+37
| +3,700% | +$2.54K |
|
3800
PUT
Equinor
EQNR
$90.9B
| $255K | ﹤0.01% |
182
-89
| -33% | -$1.37K |
|
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.