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 | |
|---|---|---|---|---|---|---|
776
Zoom
ZM
$24.5B
| $11.8M | 0.01% |
174,427
+134,531
| +337% | +$10.2M |
|
777
PUT
Energy Transfer Partners
ET
$70.2B
| $11.8M | 0.01% |
993,000
-177,300
| -15% | -$2.13M |
|
778
PUT
Canadian Natural Resources
CNQ
$98.2B
| $11.8M | 0.01% |
423,600
-56,200
| -12% | -$1.61M |
|
779
CALL
O'Reilly Automotive
ORLY
$71.1B
| $11.7M | 0.01% |
208,500
+129,000
| +162% | +$6.94M |
|
780
CALL
Microchip Technology
MCHP
$44B
| $11.7M | 0.01% |
166,900
+76,900
| +85% | +$5.3M |
|
781
PUT
PG&E
PCG
$39.1B
| $11.7M | 0.01% |
719,800
+417,300
| +138% | +$6.31M |
|
782
CALL
Arista Networks
ANET
$222B
| $11.6M | 0.01% |
383,200
-279,200
| -42% | -$8.59M |
|
783
Teva Pharmaceuticals
TEVA
$35.9B
| $11.6M | 0.01% |
1,274,118
+230,786
| +22% | +$2.01M |
|
784
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $11.6M | 0.01% |
117,200
-35,600
| -23% | -$3.35M |
|
785
CALL
Zoetis
ZTS
$31B
| $11.6M | 0.01% |
79,000
+31,700
| +67% | +$4.69M |
|
786
CALL
Spectrum Brands
SPB
$1.99B
| $11.6M | 0.01% |
189,900
+187,800
| +8,943% | +$9.47M |
|
787
CALL
Yum! Brands
YUM
$40.5B
| $11.5M | 0.01% |
90,100
+12,600
| +16% | +$1.53M |
|
788
CALL
Affirm
AFRM
$24B
| $11.5M | 0.01% |
1,193,100
+428,300
| +56% | +$6.45M |
|
789
CALL
NRG Energy
NRG
$29.6B
| $11.5M | 0.01% |
361,700
+239,000
| +195% | +$9.45M |
|
790
CALL
Cognizant
CTSH
$20.2B
| $11.5M | 0.01% |
201,100
+18,000
| +10% | +$1.06M |
|
791
CALL
MPLX
MPLX
$58.2B
| $11.5M | 0.01% |
349,300
+107,400
| +44% | +$3.51M |
|
792
CALL
RingCentral
RNG
$3.21B
| $11.5M | 0.01% |
323,500
+264,600
| +449% | +$9.46M |
|
793
CALL
Unilever
UL
$129B
| $11.4M | 0.01% |
200,978
+12,534
| +7% | +$671K |
|
794
Colgate-Palmolive
CL
$71.6B
| $11.4M | 0.01% |
144,413
-34,443
| -19% | -$2.58M |
|
795
CALL
Coupang
CPNG
$27.6B
| $11.3M | 0.01% |
770,000
+62,200
| +9% | +$1.1M |
|
796
PUT
Chubb
CB
$136B
| $11.3M | 0.01% |
51,300
-22,000
| -30% | -$4.58M |
|
797
PUT
Zillow
Z
$6.78B
| $11.3M | 0.01% |
354,200
-423,400
| -54% | -$14M |
|
798
PUT
Trump Media & Technology Group
DJT
$2.46B
| $11.3M | 0.01% |
752,700
-184,600
| -20% | -$3.61M |
|
|
799
PUT
Unilever
UL
$129B
| $11.2M | 0.01% |
198,222
+8,089
| +4% | +$433K |
|
800
PUT
Global Payments
GPN
$21.2B
| $11.2M | 0.01% |
112,900
+3,100
| +3% | +$323K |
|
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.