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 | |
|---|---|---|---|---|---|---|
876
PUT
Invesco S&P SmallCap Low Volatility ETF
XSLV
$246M
| $9.33M | 0.01% |
258,000
-317,500
| -55% | -$14.2M |
|
877
PUT
Ally Financial
ALLY
$13.4B
| $9.32M | 0.01% |
381,400
+180,000
| +89% | +$4.79M |
|
878
PUT
AutoNation
AN
$6.86B
| $9.27M | 0.01% |
86,400
-63,500
| -42% | -$7.02M |
|
|
FISV
879
PUT
Fiserv Inc
FISV
$26.6B
| $9.27M | 0.01% |
91,700
-53,600
| -37% | -$5.34M |
|
880
PUT
Ares Management
ARES
$27.4B
| $9.26M | 0.01% |
135,300
+120,400
| +808% | +$8.69M |
|
881
Crocs
CROX
$6.58B
| $9.25M | 0.01% |
85,323
+49,721
| +140% | +$4.4M |
|
882
PUT
Kroger
KR
$34.2B
| $9.24M | 0.01% |
207,300
-191,400
| -48% | -$8.79M |
|
883
PUT
Avis
CAR
$5.62B
| $9.23M | 0.01% |
56,300
+600
| +1% | +$120K |
|
884
PUT
Idexx Laboratories
IDXX
$42.5B
| $9.22M | 0.01% |
22,600
+5,200
| +30% | +$2.02M |
|
885
PUT
Transocean
RIG
$5.89B
| $9.2M | 0.01% |
2,018,300
+485,100
| +32% | +$1.87M |
|
886
PUT
Planet Fitness
PLNT
$4.29B
| $9.17M | 0.01% |
116,400
-400
| -0.3% | -$27.9K |
|
|
GAP
887
PUT
The Gap Inc
GAP
$6.8B
| $9.15M | 0.01% |
811,400
+632,100
| +353% | +$7.56M |
|
888
CALL
Exelon
EXC
$48.4B
| $9.13M | 0.01% |
286,500
-59,000
| -17% | -$2.33M |
|
889
CALL
US Foods
USFD
$21B
| $9.11M | 0.01% |
267,900
+128,200
| +92% | +$4.1M |
|
890
CALL
Schwab US Broad Market ETF
SCHB
$42.7B
| $9.1M | 0.01% |
396,900
-77,100
| -16% | -$1.16M |
|
891
CALL
Synchrony
SYF
$23.3B
| $9.09M | 0.01% |
276,600
+130,300
| +89% | +$4.46M |
|
892
CALL
Star Bulk Carriers
SBLK
$3.03B
| $9.09M | 0.01% |
472,600
-56,200
| -11% | -$1.09M |
|
893
CALL
Vanguard Dividend Appreciation ETF
VIG
$110B
| $9.06M | 0.01% |
59,700
-38,500
| -39% | -$5.74M |
|
894
CALL
BioNTech
BNTX
$23.3B
| $9.06M | 0.01% |
60,300
+18,800
| +45% | +$2.89M |
|
895
PUT
Realty Income
O
$60.4B
| $9.05M | 0.01% |
147,000
+29,200
| +25% | +$1.81M |
|
896
CALL
Stryker
SYK
$122B
| $9.05M | 0.01% |
37,000
+2,700
| +8% | +$613K |
|
897
PUT
Wheaton Precious Metals
WPM
$50B
| $9.04M | 0.01% |
231,300
-149,900
| -39% | -$5.42M |
|
898
PUT
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.9M
| $8.99M | 0.01% |
77,400
-3,600
| -4% | -$406K |
|
899
PUT
Iron Mountain
IRM
$37.1B
| $8.96M | 0.01% |
179,700
+126,200
| +236% | +$6.37M |
|
900
Home Depot
HD
$324B
| $8.95M | 0.01% |
+28,341
| New | +$8.63M |
|
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.