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 | |
|---|---|---|---|---|---|---|
4551
PUT
Applied Optoelectronics
AAOI
$6.14B
| $138K | ﹤0.01% |
123
+63
| +105% | +$763 |
|
4552
PUT
Autoliv
ALV
$9.14B
| $138K | ﹤0.01% |
19
-67
| -78% | -$4.75K |
|
4553
CALL
Four Corners Property Trust
FCPT
$2.89B
| $138K | ﹤0.01% |
54
+20
| +59% | +$495 |
|
4554
iShares Russell 1000 ETF
IWB
$47.1B
| $138K | ﹤0.01% |
741
+616
| +493% | +$114K |
|
4555
CALL
Amkor Technology
AMKR
$10.6B
| $137K | ﹤0.01% |
123
-507
| -80% | -$6.28K |
|
4556
Flex
FLEX
$37.7B
| $137K | ﹤0.01% |
16,403
+12,166
| +287% | +$99.2K |
|
4557
PUT
World Acceptance Corp
WRLD
$861M
| $137K | ﹤0.01% |
13
+12
| +1,200% | +$997 |
|
|
ARNA
4558
DELISTED
Arena Pharmaceuticals Inc
ARNA
| $137K | ﹤0.01% |
1,832
-796
| -30% | -$53.1K |
|
|
VSLR
4559
DELISTED
VIVINT SOLAR, INC.
VSLR
| $137K | ﹤0.01% |
+3,243
| New | +$83.6K |
|
4560
Arch Capital
ACGL
$35.7B
| $136K | ﹤0.01% |
4,659
-8,078
| -63% | -$246K |
|
|
DVAX
4561
DELISTED
Dynavax Technologies
DVAX
| $136K | ﹤0.01% |
31,519
-56,984
| -64% | -$407K |
|
4562
PUT
First Bancorp
FBNC
$2.61B
| $136K | ﹤0.01% |
+65
| New | +$1.39K |
|
4563
CapForce IBD 50 ETF
FFTY
$78.8M
| $136K | ﹤0.01% |
+3,646
| New | +$134K |
|
4564
PUT
Repay Holdings
RPAY
$335M
| $136K | ﹤0.01% |
58
+55
| +1,833% | +$1.33K |
|
4565
PUT
Telefônica Brasil
VIV
$20.4B
| $136K | ﹤0.01% |
178
+175
| +5,833% | +$1.59K |
|
|
CMD
4566
CALL
DELISTED
Cantel Medical Corporation
CMD
| $136K | ﹤0.01% |
31
+2
| +7% | +$99 |
|
|
AKCA
4567
PUT
DELISTED
Akcea Therapeutics Inc
AKCA
| $136K | ﹤0.01% |
75
+73
| +3,650% | +$1.04K |
|
4568
Conduent
CNDT
$253M
| $135K | ﹤0.01% |
42,700
+34,761
| +438% | +$103K |
|
4569
Energizer
ENR
$1.47B
| $135K | ﹤0.01% |
3,467
+3,253
| +1,520% | +$149K |
|
4570
CALL
Health Catalyst
HCAT
$160M
| $135K | ﹤0.01% |
37
+8
| +28% | +$272 |
|
|
ECOM
4571
DELISTED
CHANNELADVISOR CORPORATION
ECOM
| $135K | ﹤0.01% |
9,392
-10,794
| -53% | -$179K |
|
|
BREW
4572
CALL
DELISTED
Craft Brew Alliance, Inc.
BREW
| $135K | ﹤0.01% |
82
+58
| +242% | +$896 |
|
4573
PUT
Allot
ALLT
$362M
| $134K | ﹤0.01% |
148
+99
| +202% | +$1.05K |
|
4574
PUT
Clean Harbors
CLH
$17.2B
| $134K | ﹤0.01% |
24
+4
| +20% | +$237 |
|
4575
Guidewire Software
GWRE
$13.9B
| $134K | ﹤0.01% |
1,292
-1,981
| -61% | -$223K |
|
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.