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 | |
|---|---|---|---|---|---|---|
726
PUT
Cboe Global Markets
CBOE
$30.1B
| $13.3M | 0.01% |
105,800
-6,100
| -5% | -$753K |
|
727
CALL
PACCAR
PCAR
$69.5B
| $13.2M | 0.01% |
200,700
+8,100
| +4% | +$529K |
|
728
PUT
Ferrari
RACE
$63.4B
| $13.2M | 0.01% |
61,800
+50,900
| +467% | +$10.5M |
|
729
PUT
British American Tobacco
BTI
$130B
| $13.2M | 0.01% |
329,000
-72,100
| -18% | -$2.83M |
|
|
UCD
730
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $13.1M | 0.01% |
261,800
-38,800
| -13% | -$1.95M |
|
731
General Mills
GIS
$19.2B
| $13.1M | 0.01% |
156,487
+140,595
| +885% | +$11.5M |
|
732
CALL
Vertex Pharmaceuticals
VRTX
$120B
| $13.1M | 0.01% |
45,400
-2,100
| -4% | -$640K |
|
|
EXAS
733
CALL
DELISTED
Exact Sciences
EXAS
| $13M | 0.01% |
263,300
+87,000
| +49% | +$3.55M |
|
734
PUT
ProShares Ultra Bloomberg Natural Gas
BOIL
$423M
| $13M | 0.01% |
6,750
-2,053
| -23% | -$16M |
|
735
PUT
HSBC
HSBC
$350B
| $13M | 0.01% |
417,900
-71,500
| -15% | -$2.03M |
|
736
CALL
Vanguard Consumer Discretionary ETF
VCR
$5.82B
| $13M | 0.01% |
56,300
+15,100
| +37% | +$3.54M |
|
737
CALL
The Mosaic Company
MOS
$7.2B
| $13M | 0.01% |
296,600
-196,200
| -40% | -$9.71M |
|
738
CALL
Ross Stores
ROST
$75.4B
| $13M | 0.01% |
112,100
+63,900
| +133% | +$6.52M |
|
739
PUT
Teva Pharmaceuticals
TEVA
$35.5B
| $13M | 0.01% |
1,426,300
+276,300
| +24% | +$2.41M |
|
740
PUT
Seagate
STX
$209B
| $13M | 0.01% |
247,100
-43,900
| -15% | -$2.33M |
|
741
CALL
Nutanix
NTNX
$14.4B
| $13M | 0.01% |
498,200
-84,900
| -15% | -$2.32M |
|
742
CALL
Southwest Airlines
LUV
$22.2B
| $12.9M | 0.01% |
384,200
-190,700
| -33% | -$6.88M |
|
743
CALL
Hershey
HSY
$34.5B
| $12.9M | 0.01% |
55,700
+35,100
| +170% | +$8.09M |
|
744
PUT
Microchip Technology
MCHP
$44.5B
| $12.9M | 0.01% |
183,300
-38,300
| -17% | -$2.64M |
|
745
CALL
Crown Castle
CCI
$33.7B
| $12.9M | 0.01% |
94,800
+49,500
| +109% | +$6.69M |
|
746
CALL
Cardinal Health
CAH
$52.3B
| $12.8M | 0.01% |
166,800
-3,000
| -2% | -$228K |
|
747
PUT
Beyond Meat
BYND
$296M
| $12.8M | 0.01% |
1,040,500
+301,000
| +41% | +$4.19M |
|
748
CALL
CME Group
CME
$91.6B
| $12.8M | 0.01% |
76,100
+27,700
| +57% | +$4.81M |
|
749
CALL
L3Harris
LHX
$55.9B
| $12.8M | 0.01% |
61,300
+1,200
| +2% | +$271K |
|
750
CALL
NetEase
NTES
$77B
| $12.7M | 0.01% |
174,700
+105,000
| +151% | +$7.15M |
|
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.