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 | |
|---|---|---|---|---|---|---|
2026
Realty Income
O
$61.2B
| $1.62M | ﹤0.01% |
25,612
-8,005
| -24% | -$497K |
|
|
K
2027
DELISTED
Kellanova
K
| $1.62M | ﹤0.01% |
+24,275
| New | +$1.65M |
|
2028
CALL
Editas Medicine
EDIT
$399M
| $1.62M | ﹤0.01% |
182,700
+16,900
| +10% | +$186K |
|
2029
PUT
Invesco DB Commodity Index Tracking Fund
DBC
$1.73B
| $1.62M | ﹤0.01% |
65,700
+4,500
| +7% | +$113K |
|
2030
CALL
Polestar Automotive Holding UK
PSNY
$1.98B
| $1.62M | ﹤0.01% |
10,160
-7,103
| -41% | -$1.15M |
|
2031
CALL
Virtu Financial
VIRT
$5.2B
| $1.61M | ﹤0.01% |
79,100
+7,500
| +10% | +$163K |
|
2032
Globus Medical
GMED
$10.4B
| $1.61M | ﹤0.01% |
21,723
+15,415
| +244% | +$1.05M |
|
2033
CALL
Agilon Health
AGL
$1.64B
| $1.61M | ﹤0.01% |
3,996
-1,460
| -27% | -$685K |
|
2034
CALL
Kornit Digital
KRNT
$706M
| $1.61M | ﹤0.01% |
70,100
-300
| -0.4% | -$7.5K |
|
2035
CALL
Parsons
PSN
$6.28B
| $1.61M | ﹤0.01% |
34,800
+33,900
| +3,767% | +$1.56M |
|
2036
PUT
DigitalBridge
DBRG
$2.94B
| $1.61M | ﹤0.01% |
146,900
-5,000
| -3% | -$65K |
|
2037
Barclays
BCS
$94.1B
| $1.6M | ﹤0.01% |
205,738
-21,005
| -9% | -$153K |
|
|
PBT
2038
Permian Basin Royalty Trust
PBT
$1.36B
| $1.6M | ﹤0.01% |
63,474
-33,639
| -35% | -$696K |
|
2039
PUT
Alamos Gold
AGI
$12.4B
| $1.6M | ﹤0.01% |
158,100
+17,700
| +13% | +$156K |
|
2040
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $1.6M | ﹤0.01% |
151,600
+51,600
| +52% | +$522K |
|
|
2041
PUT
Agilon Health
AGL
$1.64B
| $1.6M | ﹤0.01% |
3,960
+948
| +31% | +$445K |
|
2042
Paylocity
PCTY
$6.71B
| $1.59M | ﹤0.01% |
8,209
+4,833
| +143% | +$1.04M |
|
2043
CALL
Kulicke & Soffa
KLIC
$5.3B
| $1.59M | ﹤0.01% |
36,000
+1,100
| +3% | +$48.3K |
|
2044
CALL
Healthpeak Properties
DOC
$15.4B
| $1.59M | ﹤0.01% |
63,500
+52,800
| +493% | +$1.28M |
|
2045
PUT
Keurig Dr Pepper
KDP
$40.4B
| $1.58M | ﹤0.01% |
44,400
+29,500
| +198% | +$1.11M |
|
2046
CALL
UWM Holdings
UWMC
$621M
| $1.58M | ﹤0.01% |
478,300
-69,900
| -13% | -$262K |
|
2047
PUT
Westrock Coffee
WEST
$741M
| $1.58M | ﹤0.01% |
118,500
+99,300
| +517% | +$1.19M |
|
|
TGI
2048
CALL
DELISTED
Triumph Group
TGI
| $1.58M | ﹤0.01% |
152,700
+150,600
| +7,171% | +$1.56M |
|
2049
Iron Mountain
IRM
$38.2B
| $1.58M | ﹤0.01% |
+31,638
| New | +$1.6M |
|
2050
PUT
EXL Service
EXLS
$4.23B
| $1.57M | ﹤0.01% |
46,500
-14,000
| -23% | -$486K |
|
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.