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 | |
|---|---|---|---|---|---|---|
1551
State Street Communication Services Select Sector SPDR ETF
XLC
$21.9B
| $1.96M | ﹤0.01% |
+32,992
| New | +$1.95M |
|
1552
CALL
SSR Mining
SSRM
$5.57B
| $1.96M | ﹤0.01% |
1,049
-136
| -11% | -$2.9K |
|
1553
CALL
Alamos Gold
AGI
$12.4B
| $1.95M | ﹤0.01% |
2,209
+485
| +28% | +$4.89K |
|
1554
PUT
NRG Energy
NRG
$29.8B
| $1.95M | ﹤0.01% |
633
-52
| -8% | -$1.72K |
|
1555
Bath & Body Works
BBWI
$4.01B
| $1.94M | ﹤0.01% |
75,426
-127,872
| -63% | -$2.61M |
|
1556
National Grid
NGG
$81.9B
| $1.94M | ﹤0.01% |
37,889
+34,353
| +972% | +$1.73M |
|
1557
PUT
America Movil
AMX
$78.1B
| $1.93M | ﹤0.01% |
1,549
+542
| +54% | +$6.88K |
|
1558
CALL
Monster Beverage
MNST
$91.4B
| $1.93M | ﹤0.01% |
482
+234
| +94% | +$9.24K |
|
1559
Ralph Lauren
RL
$22.2B
| $1.93M | ﹤0.01% |
28,436
+13,173
| +86% | +$939K |
|
1560
CALL
iRhythm Holdings
IRTC
$3.59B
| $1.93M | ﹤0.01% |
81
-43
| -35% | -$7.61K |
|
1561
CALL
MarketAxess Holdings
MKTX
$4.15B
| $1.93M | ﹤0.01% |
40
-54
| -57% | -$26.7K |
|
1562
PUT
Vroom Inc
VRM
$36.9M
| $1.93M | ﹤0.01% |
+5
| New | +$22.3K |
|
|
MNTA
1563
PUT
DELISTED
Momenta Pharmaceuticals, Inc.
MNTA
| $1.93M | ﹤0.01% |
367
+338
| +1,166% | +$14K |
|
|
JNPR
1564
CALL
DELISTED
Juniper Networks
JNPR
| $1.92M | ﹤0.01% |
895
-1,474
| -62% | -$35K |
|
|
DNKN
1565
CALL
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $1.92M | ﹤0.01% |
235
+35
| +18% | +$2.53K |
|
|
NEWR
1566
CALL
DELISTED
New Relic, Inc.
NEWR
| $1.92M | ﹤0.01% |
341
+125
| +58% | +$7.63K |
|
1567
PUT
First American
FAF
$7.66B
| $1.92M | ﹤0.01% |
377
+82
| +28% | +$4.25K |
|
1568
Li Auto
LI
$12.6B
| $1.92M | ﹤0.01% |
+110,279
| New | +$1.84M |
|
|
PE
1569
CALL
DELISTED
PARSLEY ENERGY INC
PE
| $1.92M | ﹤0.01% |
2,049
+704
| +52% | +$7.53K |
|
1570
PUT
Federal Agricultural Mortgage Class A
AGM.A
$1.61B
| $1.92M | ﹤0.01% |
301
+271
| +903% | +$15.8K |
|
1571
CALL
Woodward
WWD
$25B
| $1.92M | ﹤0.01% |
239
+223
| +1,394% | +$17.9K |
|
1572
PUT
Perrigo
PRGO
$1.4B
| $1.91M | ﹤0.01% |
417
-133
| -24% | -$6.97K |
|
1573
CALL
Henry Schein
HSIC
$9.74B
| $1.91M | ﹤0.01% |
325
-195
| -38% | -$12.5K |
|
1574
NetEase
NTES
$76.5B
| $1.91M | ﹤0.01% |
21,005
-10,900
| -34% | -$1.02M |
|
|
LADR
1575
PUT
Ladder Capital
LADR
$1.25B
| $1.91M | ﹤0.01% |
2,678
+2,249
| +524% | +$16.9K |
|
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.