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 | |
|---|---|---|---|---|---|---|
4226
PUT
Vanda Pharmaceuticals
VNDA
$304M
| $183K | ﹤0.01% |
190
+5
| +3% | +$53 |
|
4227
Workiva
WK
$3.45B
| $183K | ﹤0.01% |
3,294
-2,309
| -41% | -$128K |
|
|
AGRX
4228
CALL
DELISTED
Agile Therapeutics
AGRX
| – | – |
0
| – | – |
|
4229
Goldgroup Mining Inc.
GORO
$155M
| $182K | ﹤0.01% |
53,423
+41,895
| +363% | +$171K |
|
4230
PUT
Prudential
PUK
$36.4B
| $182K | ﹤0.01% |
66
-145
| -69% | -$4.34K |
|
|
TBIO
4231
DELISTED
Translate Bio, Inc. Common Stock
TBIO
| $182K | ﹤0.01% |
13,439
-8,848
| -40% | -$136K |
|
4232
Aegon
AEG
$13.3B
| $181K | ﹤0.01% |
76,743
+6,890
| +10% | +$18.3K |
|
4233
CALL
Arlo Technologies
ARLO
$1.58B
| $181K | ﹤0.01% |
345
+324
| +1,543% | +$1.56K |
|
4234
PUT
BioCryst Pharmaceuticals
BCRX
$2.42B
| $181K | ﹤0.01% |
529
+508
| +2,419% | +$2.18K |
|
|
CHX
4235
PUT
DELISTED
ChampionX
CHX
| $181K | ﹤0.01% |
227
+18
| +9% | +$173 |
|
4236
CALL
TechnipFMC
FTI
$28.6B
| $181K | ﹤0.01% |
387
-660
| -63% | -$3.71K |
|
4237
CALL
Pennant Group
PNTG
$1.43B
| $181K | ﹤0.01% |
+47
| New | +$1.44K |
|
4238
Visteon
VC
$2.85B
| $181K | ﹤0.01% |
2,623
+2,562
| +4,200% | +$189K |
|
4239
Clean Energy Fuels
CLNE
$416M
| $180K | ﹤0.01% |
72,959
+43,017
| +144% | +$112K |
|
4240
Merit Medical Systems
MMSI
$4.82B
| $180K | ﹤0.01% |
+4,139
| New | +$187K |
|
4241
Navient
NAVI
$819M
| $180K | ﹤0.01% |
21,375
-3,719
| -15% | -$30.5K |
|
4242
Pinnacle Financial Partners Inc
PNFP
$15.8B
| $180K | ﹤0.01% |
+5,067
| New | +$202K |
|
4243
PUT
Allison Transmission
ALSN
$9.51B
| $179K | ﹤0.01% |
51
-246
| -83% | -$8.91K |
|
4244
Ascendis Pharma A/S
ASND
$16.5B
| $179K | ﹤0.01% |
1,163
-844
| -42% | -$121K |
|
4245
PUT
Duluth Holdings
DLTH
$152M
| $179K | ﹤0.01% |
147
+19
| +15% | +$176 |
|
4246
CALL
National Vision
EYE
$1.76B
| $179K | ﹤0.01% |
47
+8
| +21% | +$278 |
|
4247
MaxLinear
MXL
$5.19B
| $179K | ﹤0.01% |
7,711
-60,941
| -89% | -$1.5M |
|
4248
CALL
Ryanair
RYAAY
$30B
| $179K | ﹤0.01% |
55
-740
| -93% | -$23K |
|
4249
CALL
Rayonier Advanced Materials
RYAM
$562M
| $179K | ﹤0.01% |
562
+456
| +430% | +$1.47K |
|
4250
SITE Centers
SITC
$236M
| $179K | ﹤0.01% |
31,998
+20,065
| +168% | +$119K |
|
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.