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 | |
|---|---|---|---|---|---|---|
1551
CALL
Neurocrine Biosciences
NBIX
$17.7B
| $3.04M | ﹤0.01% |
25,500
+7,800
| +44% | +$914K |
|
1552
CALL
Old Dominion Freight Line
ODFL
$48.5B
| $3.04M | ﹤0.01% |
21,400
+6,600
| +45% | +$938K |
|
1553
PUT
Illinois Tool Works
ITW
$81.4B
| $3.02M | ﹤0.01% |
13,700
+6,200
| +83% | +$1.32M |
|
|
SJR
1554
PUT
DELISTED
Shaw Communications Inc.
SJR
| $3.02M | ﹤0.01% |
104,800
+104,100
| +14,871% | +$2.73M |
|
1555
PUT
Applovin
APP
$132B
| $3.01M | ﹤0.01% |
286,300
+83,400
| +41% | +$1.22M |
|
1556
PUT
MasTec
MTZ
$26.7B
| $3.01M | ﹤0.01% |
35,300
+23,200
| +192% | +$1.9M |
|
1557
PUT
Bumble
BMBL
$367M
| $3.01M | ﹤0.01% |
143,000
-6,100
| -4% | -$140K |
|
1558
CALL
Qualys
QLYS
$4.84B
| $3.01M | ﹤0.01% |
26,800
+24,500
| +1,065% | +$3.06M |
|
|
CTRA
1559
DELISTED
Coterra Energy
CTRA
| $3M | ﹤0.01% |
122,027
+60,303
| +98% | +$1.66M |
|
1560
Goodyear
GT
$2.07B
| $3M | ﹤0.01% |
295,151
+68,831
| +30% | +$752K |
|
|
FITB
1561
PUT
Fifth Third Bancorp
FITB
$52B
| $2.99M | ﹤0.01% |
91,200
-29,000
| -24% | -$990K |
|
1562
CALL
The GEO Group
GEO
$4.13B
| $2.99M | ﹤0.01% |
273,200
+116,800
| +75% | +$1.14M |
|
1563
Vale
VALE
$62.9B
| $2.99M | ﹤0.01% |
176,250
-230,151
| -57% | -$3.46M |
|
|
CRON
1564
PUT
Cronos Group
CRON
$1.05B
| $2.99M | ﹤0.01% |
1,176,500
-656,100
| -36% | -$1.92M |
|
|
BRSL
1565
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $2.98M | ﹤0.01% |
131,600
+31,400
| +31% | +$680K |
|
|
NUVL
1566
CALL
DELISTED
Nuvalent
NUVL
| $2.98M | ﹤0.01% |
+100,100
| New | +$2.79M |
|
1567
PUT
American Eagle Outfitters
AEO
$2.85B
| $2.97M | ﹤0.01% |
213,000
-19,300
| -8% | -$247K |
|
1568
CALL
AutoNation
AN
$6.97B
| $2.97M | ﹤0.01% |
27,700
+17,400
| +169% | +$1.92M |
|
1569
Ovintiv
OVV
$17.5B
| $2.97M | ﹤0.01% |
+58,521
| New | +$3.06M |
|
|
GOOS
1570
CALL
Canada Goose Holdings
GOOS
$868M
| $2.96M | ﹤0.01% |
166,200
+31,800
| +24% | +$558K |
|
1571
CALL
Doximity
DOCS
$3.67B
| $2.96M | ﹤0.01% |
88,200
-33,400
| -27% | -$1.02M |
|
1572
Check Point Software Technologies
CHKP
$13.3B
| $2.95M | ﹤0.01% |
23,376
+5,058
| +28% | +$631K |
|
1573
PUT
Itaú Unibanco
ITUB
$91.3B
| $2.95M | ﹤0.01% |
712,317
-141,738
| -17% | -$644K |
|
1574
State Street Communication Services Select Sector SPDR ETF
XLC
$21.9B
| $2.95M | ﹤0.01% |
61,436
+61,434
| +3,071,700% | +$3.01M |
|
1575
CALL
Equinix
EQIX
$107B
| $2.95M | ﹤0.01% |
4,500
+300
| +7% | +$185K |
|
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.