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 | |
|---|---|---|---|---|---|---|
4751
PUT
ACI Worldwide
ACIW
$5.82B
| $114K | ﹤0.01% |
44
+42
| +2,100% | +$1.16K |
|
4752
PUT
Atmos Energy
ATO
$28.9B
| $114K | ﹤0.01% |
12
+2
| +20% | +$200 |
|
4753
CALL
BBVA Argentina
BBAR
$3.88B
| $114K | ﹤0.01% |
454
-380
| -46% | -$1.38K |
|
4754
PUT
Barnes & Noble Education
BNED
$432M
| $114K | ﹤0.01% |
4
-1
| -20% | -$225 |
|
4755
PUT
Cogent Communications
CCOI
$671M
| $114K | ﹤0.01% |
19
-24
| -56% | -$1.75K |
|
4756
Healthpeak Properties
DOC
$15.1B
| $114K | ﹤0.01% |
4,203
-26,394
| -86% | -$723K |
|
4757
Heron Therapeutics
HRTX
$93M
| $114K | ﹤0.01% |
7,745
+7,662
| +9,231% | +$120K |
|
|
KNDI
4758
Kandi Technologies Group
KNDI
$65.9M
| $114K | ﹤0.01% |
18,544
-14,939
| -45% | -$95.4K |
|
4759
CALL
Manhattan Associates
MANH
$11.2B
| $114K | ﹤0.01% |
12
-11
| -48% | -$1.04K |
|
4760
PUT
Manchester United
MANU
$3.98B
| $114K | ﹤0.01% |
79
-7
| -8% | -$107 |
|
4761
CALL
Reinsurance Group of America
RGA
$15.5B
| $114K | ﹤0.01% |
12
-85
| -88% | -$7.65K |
|
|
SCS
4762
CALL
DELISTED
Steelcase
SCS
| $114K | ﹤0.01% |
113
+45
| +66% | +$484 |
|
4763
SFL Corp
SFL
$1.64B
| $114K | ﹤0.01% |
+15,249
| New | +$133K |
|
4764
Alaunos Therapeutics
TCRT
$4.59M
| $114K | ﹤0.01% |
303
-220
| -42% | -$97.2K |
|
|
VTLE
4765
DELISTED
Vital Energy
VTLE
| $114K | ﹤0.01% |
11,703
-25,772
| -69% | -$359K |
|
|
ATSG
4766
DELISTED
Air Transport Services Group
ATSG
| $114K | ﹤0.01% |
+4,556
| New | +$114K |
|
|
ERF
4767
DELISTED
Enerplus Corporation
ERF
| $114K | ﹤0.01% |
+61,786
| New | +$154K |
|
4768
EQT Corp
EQT
$33.3B
| $113K | ﹤0.01% |
8,756
-43,100
| -83% | -$632K |
|
|
FPI
4769
CALL
Farmland Partners
FPI
$407M
| $113K | ﹤0.01% |
170
+121
| +247% | +$823 |
|
|
ILPT
4770
PUT
Industrial Logistics Properties Trust
ILPT
$571M
| $113K | ﹤0.01% |
52
+49
| +1,633% | +$1.04K |
|
4771
CALL
Primerica
PRI
$10B
| $113K | ﹤0.01% |
10
-19
| -66% | -$2.31K |
|
4772
Rush Street Interactive
RSI
$2.8B
| $113K | ﹤0.01% |
+8,921
| New | +$102K |
|
4773
PUT
Service Corp International
SCI
$11.8B
| $113K | ﹤0.01% |
27
-30
| -53% | -$1.28K |
|
4774
Vuzix
VUZI
$194M
| $113K | ﹤0.01% |
24,891
-41,141
| -62% | -$161K |
|
|
NTP
4775
PUT
DELISTED
Nam Tai Property Inc.
NTP
| $113K | ﹤0.01% |
121
+34
| +39% | +$293 |
|
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.