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 | |
|---|---|---|---|---|---|---|
826
CALL
Royal Bank of Canada
RY
$290B
| $10.5M | 0.01% |
111,900
-170,000
| -60% | -$16M |
|
827
PUT
Paycom
PAYC
$6.47B
| $10.4M | 0.01% |
33,500
-5,000
| -13% | -$1.61M |
|
828
PUT
Apollo Global Management
APO
$68.6B
| $10.4M | 0.01% |
162,700
-58,300
| -26% | -$3.46M |
|
829
PUT
Enbridge
ENB
$123B
| $10.3M | 0.01% |
264,500
+38,300
| +17% | +$1.5M |
|
|
SI
830
PUT
DELISTED
Silvergate Capital Corporation
SI
| $10.3M | 0.01% |
594,000
+537,900
| +959% | +$21.3M |
|
831
Airbnb
ABNB
$81.6B
| $10.3M | 0.01% |
120,628
+115,845
| +2,422% | +$11.7M |
|
832
CALL
Advance Auto Parts
AAP
$3.22B
| $10.3M | 0.01% |
70,100
+50,600
| +259% | +$8.2M |
|
833
CALL
Hasbro
HAS
$12.4B
| $10.3M | 0.01% |
168,800
+53,800
| +47% | +$3.36M |
|
834
CALL
QuantumScape Corp
QS
$3.15B
| $10.3M | 0.01% |
1,813,000
+1,182,800
| +188% | +$8.76M |
|
835
PUT
Boston Properties
BXP
$10.8B
| $10.3M | 0.01% |
152,000
+61,900
| +69% | +$4.39M |
|
836
CALL
ChargePoint
CHPT
$140M
| $10.2M | 0.01% |
53,695
-3,855
| -7% | -$937K |
|
837
CALL
MGM Resorts International
MGM
$11.5B
| $10.2M | 0.01% |
303,800
+113,300
| +59% | +$3.92M |
|
838
PUT
Cummins
CMI
$91.8B
| $10.2M | 0.01% |
42,000
-19,500
| -32% | -$4.64M |
|
839
PUT
Edwards Lifesciences
EW
$48.3B
| $10.2M | 0.01% |
136,300
+35,500
| +35% | +$2.74M |
|
840
CALL
Boston Scientific
BSX
$64.8B
| $10.1M | 0.01% |
219,200
+27,400
| +14% | +$1.19M |
|
841
CALL
Darden Restaurants
DRI
$22.2B
| $10.1M | 0.01% |
73,300
+10,400
| +17% | +$1.45M |
|
|
UCD
842
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $10.1M | 0.01% |
253,600
-70,100
| -22% | -$2.8M |
|
843
PUT
Cintas
CTAS
$81.3B
| $10.1M | 0.01% |
89,600
+28,000
| +45% | +$3.03M |
|
844
CALL
Enterprise Products Partners
EPD
$83.9B
| $10.1M | 0.01% |
418,800
-199,800
| -32% | -$4.92M |
|
845
Novartis
NVS
$297B
| $10.1M | 0.01% |
111,100
+50,141
| +82% | +$4.22M |
|
846
PUT
Carlyle Group
CG
$16B
| $10.1M | 0.01% |
337,100
+285,200
| +550% | +$8.14M |
|
847
PUT
Kohl's
KSS
$2.06B
| $10M | 0.01% |
397,600
-78,200
| -16% | -$2.22M |
|
848
PUT
Affirm
AFRM
$23.8B
| $10M | 0.01% |
1,037,500
+75,000
| +8% | +$1.13M |
|
849
GSK
GSK
$102B
| $10M | 0.01% |
285,138
-112,980
| -28% | -$3.76M |
|
850
CALL
Canadian Natural Resources
CNQ
$98B
| $9.96M | 0.01% |
358,800
-150,800
| -30% | -$4.31M |
|
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.