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
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5226
CALL
Glacier Bancorp
GBCI
$6.38B
| $88K | ﹤0.01% |
1,800
+700
| +64% | +$37.8K |
|
5227
SPX Corp
SPXC
$9.98B
| $88K | ﹤0.01% |
1,343
-60
| -4% | -$3.93K |
|
5228
Teradata
TDC
$2.88B
| $88K | ﹤0.01% |
2,619
-9,867
| -79% | -$317K |
|
5229
PUT
Interface
TILE
$1.96B
| $88K | ﹤0.01% |
9,000
-2,700
| -23% | -$28.4K |
|
5230
CALL
Astrana Health
ASTH
$1.82B
| $88K | ﹤0.01% |
3,000
-8,300
| -73% | -$267K |
|
|
NESR
5231
CALL
National Energy Services Reunited Corp
NESR
$2.67B
| $88K | ﹤0.01% |
+12,800
| New | +$84.7K |
|
|
SUM
5232
DELISTED
Summit Materials, Inc. Class A Common Stock
SUM
| $88K | ﹤0.01% |
+3,121
| New | +$86K |
|
|
MIXT
5233
CALL
DELISTED
MIX TELEMATICS LIMITED
MIXT
| $88K | ﹤0.01% |
12,600
+12,100
| +2,420% | +$93.9K |
|
|
PAYA
5234
DELISTED
Paya Holdings Inc. Class A Common Stock
PAYA
| $88K | ﹤0.01% |
11,285
+2,000
| +22% | +$15.4K |
|
5235
CALL
BWX Technologies
BWXT
$15.2B
| $87K | ﹤0.01% |
1,500
+1,300
| +650% | +$74.7K |
|
5236
Chewy
CHWY
$9.34B
| $87K | ﹤0.01% |
+2,357
| New | +$91.8K |
|
5237
PUT
CorMedix
CRMD
$588M
| $87K | ﹤0.01% |
20,800
-18,100
| -47% | -$64K |
|
5238
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.84B
| $87K | ﹤0.01% |
2,490
-742
| -23% | -$25.7K |
|
|
HIVE
5239
PUT
HIVE Digital Technologies
HIVE
$821M
| $87K | ﹤0.01% |
61,000
-27,100
| -31% | -$69.2K |
|
5240
Mid-America Apartment Communities
MAA
$15.5B
| $87K | ﹤0.01% |
559
-1,473
| -72% | -$229K |
|
5241
NIO
NIO
$12.1B
| $87K | ﹤0.01% |
8,939
-442,023
| -98% | -$5.09M |
|
5242
PUT
Intellia Therapeutics
NTLA
$1.55B
| $87K | ﹤0.01% |
2,500
-11,300
| -82% | -$537K |
|
5243
PUT
OSI Systems
OSIS
$3.62B
| $87K | ﹤0.01% |
1,100
-56,900
| -98% | -$4.63M |
|
5244
CALL
Phreesia
PHR
$656M
| $87K | ﹤0.01% |
2,700
+2,000
| +286% | +$54.3K |
|
5245
CALL
CarParts.com
PRTS
$42.4M
| $87K | ﹤0.01% |
1,390
+660
| +90% | +$34.6K |
|
5246
RLJ Lodging Trust
RLJ
$1.87B
| $87K | ﹤0.01% |
8,306
+1,334
| +19% | +$15.1K |
|
5247
Satellogic
SATL
$517M
| $87K | ﹤0.01% |
28,713
+28,613
| +28,613% | +$128K |
|
5248
Invesco S&P 500 High Beta ETF
SPHB
$970M
| $87K | ﹤0.01% |
+1,397
| New | +$88K |
|
5249
The ONE Group
STKS
$56.5M
| $87K | ﹤0.01% |
13,888
+1,674
| +14% | +$11K |
|
5250
PUT
Xponential Fitness
XPOF
$273M
| $87K | ﹤0.01% |
3,800
+2,100
| +124% | +$43.3K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.