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 | |
|---|---|---|---|---|---|---|
701
PUT
Alnylam Pharmaceuticals
ALNY
$35.8B
| $14.2M | 0.02% |
59,800
+35,100
| +142% | +$7.49M |
|
|
XYZ
702
Block Inc
XYZ
$45.8B
| $14.2M | 0.02% |
225,937
+222,337
| +6,176% | +$13.7M |
|
|
PARA
703
CALL
DELISTED
Paramount Global Class B
PARA
| $14.2M | 0.02% |
839,800
+166,300
| +25% | +$3.06M |
|
704
CALL
NXP Semiconductors
NXPI
$69.5B
| $14.1M | 0.02% |
89,500
-24,100
| -21% | -$3.82M |
|
705
PUT
NIO
NIO
$11.6B
| $14.1M | 0.02% |
1,442,400
-1,075,600
| -43% | -$12.4M |
|
706
General Dynamics
GD
$103B
| $14.1M | 0.02% |
56,673
+53,929
| +1,965% | +$13.2M |
|
707
PUT
Upstart Holdings
UPST
$2.62B
| $14M | 0.02% |
1,059,200
-800
| -0.1% | -$15.5K |
|
708
PUT
Sunrun
RUN
$2.51B
| $13.9M | 0.02% |
579,900
-2,900
| -0.5% | -$77.4K |
|
709
CALL
International Flavors & Fragrances
IFF
$18.5B
| $13.9M | 0.02% |
132,800
+116,600
| +720% | +$11.5M |
|
710
CALL
Equinor
EQNR
$98.2B
| $13.9M | 0.02% |
387,400
+87,900
| +29% | +$3.15M |
|
711
PUT
AMC Entertainment Holdings
AMC
$1.94B
| $13.8M | 0.02% |
344,000
+129,540
| +60% | +$8.17M |
|
712
CALL
C.H. Robinson
CHRW
$24.4B
| $13.8M | 0.02% |
151,100
-18,600
| -11% | -$1.77M |
|
713
PUT
Wayfair
W
$10.7B
| $13.8M | 0.02% |
418,800
+69,400
| +20% | +$2.42M |
|
714
PUT
KKR & Co
KKR
$85.9B
| $13.8M | 0.02% |
296,500
+87,600
| +42% | +$4.27M |
|
715
CALL
Wheaton Precious Metals
WPM
$50B
| $13.8M | 0.02% |
352,100
+73,800
| +27% | +$2.67M |
|
716
CALL
Kimberly-Clark
KMB
$35.5B
| $13.7M | 0.01% |
101,000
+31,800
| +46% | +$4.04M |
|
717
CALL
Robinhood
HOOD
$91.8B
| $13.6M | 0.01% |
1,675,600
-657,200
| -28% | -$6.44M |
|
718
CALL
Steel Dynamics
STLD
$34.7B
| $13.6M | 0.01% |
139,400
+24,900
| +22% | +$2.4M |
|
719
PUT
Clorox
CLX
$11.4B
| $13.6M | 0.01% |
96,600
+10,900
| +13% | +$1.55M |
|
720
PUT
Star Bulk Carriers
SBLK
$3B
| $13.5M | 0.01% |
704,600
+210,500
| +43% | +$4.1M |
|
721
CALL
Apollo Global Management
APO
$68.9B
| $13.5M | 0.01% |
211,700
+21,400
| +11% | +$1.27M |
|
722
CALL
Manchester United
MANU
$3.86B
| $13.5M | 0.01% |
578,100
-83,600
| -13% | -$1.4M |
|
723
Medtronic
MDT
$105B
| $13.5M | 0.01% |
173,505
+149,250
| +615% | +$12.1M |
|
724
PUT
Williams-Sonoma
WSM
$25.6B
| $13.5M | 0.01% |
234,400
+47,600
| +25% | +$2.86M |
|
725
CALL
Global Payments
GPN
$21.3B
| $13.4M | 0.01% |
135,300
+14,900
| +12% | +$1.55M |
|
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.