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 | |
|---|---|---|---|---|---|---|
1626
PUT
ArcelorMittal
MT
$50.4B
| $1.81M | ﹤0.01% |
1,365
-1,007
| -42% | -$12.1K |
|
1627
CALL
NCR Voyix
VYX
$1.06B
| $1.81M | ﹤0.01% |
1,332
+1,074
| +416% | +$12.8K |
|
1628
CALL
Sprouts Farmers Market
SFM
$7.04B
| $1.8M | ﹤0.01% |
862
-412
| -32% | -$9.87K |
|
1629
PUT
ScottsMiracle-Gro
SMG
$4.03B
| $1.8M | ﹤0.01% |
118
-24
| -17% | -$3.71K |
|
1630
CALL
Williams Companies
WMB
$90.5B
| $1.8M | ﹤0.01% |
917
-577
| -39% | -$11.7K |
|
|
CBPO
1631
PUT
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $1.8M | ﹤0.01% |
162
+133
| +459% | +$14.3K |
|
|
ABB
1632
PUT
DELISTED
ABB Ltd
ABB
| $1.8M | ﹤0.01% |
707
+265
| +60% | +$6.76K |
|
1633
McKesson
MCK
$98.5B
| $1.8M | ﹤0.01% |
12,076
-4,217
| -26% | -$640K |
|
1634
PUT
Diamondback Energy
FANG
$57.6B
| $1.79M | ﹤0.01% |
596
-356
| -37% | -$13.6K |
|
1635
CALL
Adaptive Biotechnologies
ADPT
$3.56B
| $1.79M | ﹤0.01% |
369
-17
| -4% | -$715 |
|
1636
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $1.79M | ﹤0.01% |
1,476
+892
| +153% | +$13.1K |
|
|
MRTX
1637
CALL
DELISTED
Mirati Therapeutics, Inc. Common Stock
MRTX
| $1.79M | ﹤0.01% |
108
-2
| -2% | -$274 |
|
1638
Vroom Inc
VRM
$36.9M
| $1.79M | ﹤0.01% |
+432
| New | +$1.93M |
|
1639
PUT
Blackstone Mortgage Trust
BXMT
$2.82B
| $1.79M | ﹤0.01% |
813
-35
| -4% | -$820 |
|
1640
Marathon Petroleum
MPC
$90.3B
| $1.79M | ﹤0.01% |
60,903
+28,062
| +85% | +$986K |
|
1641
PUT
Fastenal
FAST
$54B
| $1.78M | ﹤0.01% |
792
-118
| -13% | -$2.71K |
|
1642
Advance Auto Parts
AAP
$3.37B
| $1.78M | ﹤0.01% |
11,624
+117
| +1% | +$17.6K |
|
1643
Apple
AAPL
$4.89T
| $1.78M | ﹤0.01% |
15,411
-28,589
| -65% | -$3.12M |
|
|
SGI
1644
PUT
Somnigroup International
SGI
$15.1B
| $1.78M | ﹤0.01% |
800
+748
| +1,438% | +$15.5K |
|
1645
PUT
AXIS Capital
AXS
$8.59B
| $1.78M | ﹤0.01% |
404
+353
| +692% | +$15.4K |
|
|
CEQP
1646
CALL
DELISTED
Crestwood Equity Partners LP
CEQP
| $1.78M | ﹤0.01% |
1,427
+212
| +17% | +$2.86K |
|
1647
CALL
Healthpeak Properties
DOC
$15.4B
| $1.77M | ﹤0.01% |
654
+277
| +73% | +$7.59K |
|
1648
CALL
Ventas
VTR
$48.9B
| $1.77M | ﹤0.01% |
423
-200
| -32% | -$8K |
|
1649
CALL
Anika Therapeutics
ANIK
$199M
| $1.77M | ﹤0.01% |
501
+375
| +298% | +$13.5K |
|
1650
CALL
BJs Wholesale Club
BJ
$11.9B
| $1.77M | ﹤0.01% |
426
-76
| -15% | -$3.14K |
|
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.