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 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.51% |
| 2 | Technology | 0.42% |
| 3 | Consumer Discretionary | 0.2% |
| 4 | Healthcare | 0.17% |
| 5 | Industrials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CBL
1851
CALL
DELISTED
CBL& Associates Properties, Inc.
CBL
| $2.23M | ﹤0.01% |
86,900
+85,900
| +8,590% | +$2.2M |
|
|
ABK
1852
CALL
DELISTED
Ambac Financial Group
ABK
| $2.22M | ﹤0.01% |
143,700
+103,900
| +261% | +$1.61M |
|
1853
Ovintiv
OVV
$17.6B
| $2.22M | ﹤0.01% |
61,583
+3,062
| +5% | +$135K |
|
1854
PUT
Vanguard Emerging Markets Government Bond ETF
VWOB
$6.35B
| $2.22M | ﹤0.01% |
21,100
+9,200
| +77% | +$571K |
|
1855
Global Payments
GPN
$23.7B
| $2.21M | ﹤0.01% |
21,034
+7,027
| +50% | +$762K |
|
1856
PUT
GlobalFoundries
GFS
$25.1B
| $2.21M | ﹤0.01% |
30,600
+24,600
| +410% | +$1.55M |
|
1857
PUT
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $2.21M | ﹤0.01% |
51,600
+35,400
| +219% | +$1.05M |
|
1858
CALL
dLocal
DLO
$4.38B
| $2.2M | ﹤0.01% |
135,900
-45,600
| -25% | -$718K |
|
1859
CALL
Driven Brands
DRVN
$2.19B
| $2.2M | ﹤0.01% |
72,700
+71,500
| +5,958% | +$2.02M |
|
1860
Voya Financial
VOYA
$9.36B
| $2.2M | ﹤0.01% |
+30,806
| New | +$2.16M |
|
1861
CALL
Antero Midstream
AM
$10.8B
| $2.2M | ﹤0.01% |
209,800
-47,100
| -18% | -$501K |
|
1862
PUT
PENN Entertainment
PENN
$2.27B
| $2.2M | ﹤0.01% |
74,200
-44,100
| -37% | -$1.37M |
|
1863
CALL
Service Corp International
SCI
$11.1B
| $2.2M | ﹤0.01% |
32,000
+22,500
| +237% | +$1.55M |
|
1864
PUT
Agilon Health
AGL
$1.53B
| $2.2M | ﹤0.01% |
3,704
-256
| -6% | -$143K |
|
1865
CALL
Winnebago Industries
WGO
$849M
| $2.2M | ﹤0.01% |
38,100
-9,500
| -20% | -$580K |
|
1866
PUT
Baker Hughes
BKR
$63.5B
| $2.2M | ﹤0.01% |
76,100
-16,200
| -18% | -$490K |
|
1867
CALL
Canadian National Railway
CNI
$74.6B
| $2.19M | ﹤0.01% |
18,600
+11,800
| +174% | +$1.39M |
|
1868
Campbell Soup
CPB
$6.41B
| $2.19M | ﹤0.01% |
+39,854
| New | +$2.11M |
|
1869
CALL
Matador Resources
MTDR
$7.39B
| $2.19M | ﹤0.01% |
46,000
-7,900
| -15% | -$444K |
|
1870
CALL
Lemonade
LMND
$4B
| $2.19M | ﹤0.01% |
153,600
-45,300
| -23% | -$689K |
|
1871
CALL
SM Energy
SM
$8.88B
| $2.19M | ﹤0.01% |
77,800
+41,400
| +114% | +$1.26M |
|
|
CIVI
1872
PUT
DELISTED
Civitas Resources
CIVI
| $2.18M | ﹤0.01% |
31,900
-22,900
| -42% | -$1.49M |
|
1873
CALL
Sprout Social
SPT
$639M
| $2.18M | ﹤0.01% |
35,800
+33,200
| +1,277% | +$2.03M |
|
1874
CALL
NNN REIT
NNN
$8.56B
| $2.17M | ﹤0.01% |
49,200
+34,900
| +244% | +$1.59M |
|
|
PPLC
1875
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $2.17M | ﹤0.01% |
348,600
+93,100
| +36% | +$580K |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q1 2023 filing shows 1,536 new, 3,663 increased, 3,631 reduced and 1,728 closed positions. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M. The largest sale was Amazon, an estimated $189M.
By sector, the portfolio is most concentrated in Miscellaneous at 99% of assets, up from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,728 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.