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 | |
|---|---|---|---|---|---|---|
3126
PUT
Unisys
UIS
$240M
| $451K | ﹤0.01% |
423
+261
| +161% | +$3K |
|
3127
PUT
CleanSpark
CLSK
$3.59B
| $449K | ﹤0.01% |
+360
| New | +$3.04K |
|
3128
PUT
La-Z-Boy
LZB
$1.62B
| $449K | ﹤0.01% |
142
-38
| -21% | -$1.16K |
|
3129
PUT
Mercury Systems
MRCY
$6.2B
| $449K | ﹤0.01% |
58
-34
| -37% | -$2.58K |
|
|
ACH
3130
PUT
Accendra Health
ACH
$252M
| $449K | ﹤0.01% |
179
-90
| -33% | -$1.31K |
|
3131
PUT
Sonoco
SON
$5.79B
| $449K | ﹤0.01% |
88
+85
| +2,833% | +$4.5K |
|
3132
PUT
Steel Dynamics
STLD
$36.1B
| $449K | ﹤0.01% |
157
+2
| +1% | +$57 |
|
|
AVYA
3133
CALL
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $449K | ﹤0.01% |
296
+13
| +5% | +$184 |
|
3134
PUT
Blink Charging
BLNK
$78.7M
| $448K | ﹤0.01% |
435
-257
| -37% | -$2.09K |
|
3135
CarParts.com
PRTS
$42.4M
| $448K | ﹤0.01% |
4,146
+2,754
| +198% | +$337K |
|
3136
PUT
Forward Air
FWRD
$487M
| $447K | ﹤0.01% |
78
+55
| +239% | +$3.02K |
|
3137
CALL
Annaly Capital Management
NLY
$17B
| $447K | ﹤0.01% |
157
-191
| -55% | -$5.53K |
|
3138
CALL
Puma Biotechnology
PBYI
$413M
| $447K | ﹤0.01% |
444
+63
| +17% | +$642 |
|
3139
Upwork
UPWK
$1.15B
| $447K | ﹤0.01% |
25,637
+21,520
| +523% | +$322K |
|
3140
EverQuote
EVER
$917M
| $446K | ﹤0.01% |
+11,557
| New | +$521K |
|
3141
PUT
Jabil
JBL
$31.5B
| $445K | ﹤0.01% |
130
+13
| +11% | +$435 |
|
3142
PUT
3D Systems Corp
DDD
$425M
| $444K | ﹤0.01% |
905
+457
| +102% | +$2.71K |
|
3143
PUT
Halozyme
HALO
$9.79B
| $444K | ﹤0.01% |
169
-94
| -36% | -$2.62K |
|
|
SNV
3144
PUT
DELISTED
Synovus
SNV
| $444K | ﹤0.01% |
210
-36
| -15% | -$750 |
|
3145
CALL
HF Sinclair
DINO
$15.9B
| $443K | ﹤0.01% |
225
+120
| +114% | +$2.99K |
|
3146
CALL
Hilltop Holdings
HTH
$2.28B
| $442K | ﹤0.01% |
215
+161
| +298% | +$3.12K |
|
3147
CALL
M/I Homes
MHO
$3.85B
| $442K | ﹤0.01% |
96
+60
| +167% | +$2.5K |
|
3148
PUT
MPLX
MPLX
$59.5B
| $442K | ﹤0.01% |
281
+64
| +29% | +$1.16K |
|
3149
CALL
Gibraltar Industries
ROCK
$1.37B
| $442K | ﹤0.01% |
68
+54
| +386% | +$3.19K |
|
3150
PUT
STAG Industrial
STAG
$7.85B
| $442K | ﹤0.01% |
145
-54
| -27% | -$1.7K |
|
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.