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 | |
|---|---|---|---|---|---|---|
1001
Lockheed Martin
LMT
$131B
| $7.38M | 0.01% |
15,162
-19,794
| -57% | -$9.2M |
|
1002
CALL
Transocean
RIG
$5.89B
| $7.36M | 0.01% |
1,613,600
+76,000
| +5% | +$293K |
|
|
DCP
1003
PUT
DELISTED
DCP Midstream, LP
DCP
| $7.35M | 0.01% |
189,600
-1,600
| -0.8% | -$61.9K |
|
1004
PUT
LPL Financial
LPLA
$25.9B
| $7.33M | 0.01% |
33,900
+28,200
| +495% | +$6.59M |
|
|
SBNY
1005
CALL
DELISTED
Signature Bank
SBNY
| $7.3M | 0.01% |
63,400
+54,000
| +574% | +$7.42M |
|
|
EXE
1006
CALL
Expand Energy Corp
EXE
$21.9B
| $7.29M | 0.01% |
77,300
-40,200
| -34% | -$3.98M |
|
|
MMP
1007
CALL
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $7.28M | 0.01% |
145,000
+35,400
| +32% | +$1.8M |
|
1008
CALL
ArcelorMittal
MT
$49.9B
| $7.28M | 0.01% |
277,600
-126,500
| -31% | -$3.1M |
|
1009
CALL
Citizens Financial Group
CFG
$30.3B
| $7.25M | 0.01% |
184,300
-100
| -0.1% | -$3.9K |
|
1010
CALL
Dick's Sporting Goods
DKS
$18.3B
| $7.25M | 0.01% |
63,400
-33,000
| -34% | -$3.72M |
|
1011
CALL
CRISPR Therapeutics
CRSP
$4.68B
| $7.24M | 0.01% |
178,100
+67,800
| +61% | +$3.6M |
|
|
AXON
1012
CALL
Axon Enterprise
AXON
$39.6B
| $7.23M | 0.01% |
43,600
+27,300
| +167% | +$4.32M |
|
|
BBBY
1013
PUT
DELISTED
Bed Bath & Beyond Inc
BBBY
| $7.22M | 0.01% |
2,878,700
+450,500
| +19% | +$1.77M |
|
1014
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$107M
| $7.22M | 0.01% |
257,600
-25,700
| -9% | -$546K |
|
1015
PUT
KB Home
KBH
$3.41B
| $7.19M | 0.01% |
225,800
+72,400
| +47% | +$2.16M |
|
1016
CALL
Beyond Meat
BYND
$289M
| $7.19M | 0.01% |
583,800
-269,800
| -32% | -$3.76M |
|
1017
PUT
Logitech
LOGI
$14.8B
| $7.18M | 0.01% |
115,400
-55,800
| -33% | -$3.05M |
|
|
SHNY
1018
PUT
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $7.18M | 0.01% |
321,900
-179,800
| -36% | -$4.01M |
|
1019
PUT
Builders FirstSource
BLDR
$7.59B
| $7.17M | 0.01% |
110,600
-13,700
| -11% | -$856K |
|
1020
CALL
First Majestic Silver
AG
$8.12B
| $7.17M | 0.01% |
860,200
+106,700
| +14% | +$932K |
|
1021
CALL
AutoZone
AZO
$47.7B
| $7.15M | 0.01% |
2,900
-1,800
| -38% | -$4.35M |
|
1022
PUT
State Street
STT
$50.6B
| $7.15M | 0.01% |
92,200
+11,800
| +15% | +$869K |
|
1023
CALL
SiriusXM
SIRI
$10.1B
| $7.12M | 0.01% |
121,890
+23,020
| +23% | +$1.42M |
|
|
ANSS
1024
PUT
DELISTED
Ansys
ANSS
| $7.1M | 0.01% |
29,400
-16,600
| -36% | -$3.87M |
|
1025
CALL
Johnson Controls International
JCI
$87.4B
| $7.1M | 0.01% |
110,900
+41,900
| +61% | +$2.56M |
|
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.