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 | |
|---|---|---|---|---|---|---|
|
ATVI
1751
DELISTED
Activision Blizzard
ATVI
| $2.33M | ﹤0.01% |
30,513
+8,392
| +38% | +$623K |
|
|
BBBY
1752
PUT
Bed Bath & Beyond
BBBY
$473M
| $2.33M | ﹤0.01% |
132,440
-46,420
| -26% | -$998K |
|
1753
PUT
SiriusXM
SIRI
$10B
| $2.33M | ﹤0.01% |
39,910
-31,100
| -44% | -$1.91M |
|
1754
CALL
Huntington Bancshares
HBAN
$35.1B
| $2.33M | ﹤0.01% |
165,100
+1,500
| +0.9% | +$21.7K |
|
1755
CALL
Icahn Enterprises
IEP
$5.17B
| $2.32M | ﹤0.01% |
45,800
-25,900
| -36% | -$1.35M |
|
|
WCN
1756
CALL
Waste Connections
WCN
$42.8B
| $2.32M | ﹤0.01% |
17,500
+13,500
| +338% | +$1.84M |
|
1757
CALL
J.M. Smucker
SJM
$12.6B
| $2.31M | ﹤0.01% |
14,600
-800
| -5% | -$119K |
|
1758
CALL
monday.com
MNDY
$3.27B
| $2.31M | ﹤0.01% |
18,900
-28,300
| -60% | -$2.94M |
|
|
ISEE
1759
CALL
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $2.31M | ﹤0.01% |
107,700
-278,500
| -72% | -$5.94M |
|
1760
CALL
Lantheus
LNTH
$6.82B
| $2.3M | ﹤0.01% |
45,100
-1,200
| -3% | -$74K |
|
1761
CALL
Leonardo DRS
DRS
$12.8B
| $2.29M | ﹤0.01% |
+179,600
| New | +$2.08M |
|
|
SPR
1762
DELISTED
Spirit AeroSystems
SPR
| $2.29M | ﹤0.01% |
77,489
+29,705
| +62% | +$771K |
|
1763
PUT
Mohawk Industries
MHK
$6.9B
| $2.29M | ﹤0.01% |
22,400
-15,500
| -41% | -$1.52M |
|
1764
CALL
Bumble
BMBL
$367M
| $2.29M | ﹤0.01% |
108,700
+6,800
| +7% | +$156K |
|
1765
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$263M
| $2.29M | ﹤0.01% |
41,800
+15,700
| +60% | +$753K |
|
|
FRC
1766
DELISTED
First Republic Bank
FRC
| $2.29M | ﹤0.01% |
+18,763
| New | +$2.29M |
|
1767
CALL
CNX Resources
CNX
$4.85B
| $2.29M | ﹤0.01% |
135,800
+6,500
| +5% | +$112K |
|
|
SWN
1768
CALL
DELISTED
Southwestern Energy Company
SWN
| $2.28M | ﹤0.01% |
390,200
-124,800
| -24% | -$820K |
|
|
SWAV
1769
CALL
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $2.28M | ﹤0.01% |
11,100
-28,600
| -72% | -$7.23M |
|
1770
PUT
Amkor Technology
AMKR
$16.1B
| $2.27M | ﹤0.01% |
94,900
+87,400
| +1,165% | +$2.03M |
|
|
SPR
1771
CALL
DELISTED
Spirit AeroSystems
SPR
| $2.27M | ﹤0.01% |
76,700
-26,100
| -25% | -$677K |
|
1772
Celsius Holdings
CELH
$6.93B
| $2.26M | ﹤0.01% |
65,307
-26,538
| -29% | -$865K |
|
1773
CALL
Envista
NVST
$4.28B
| $2.26M | ﹤0.01% |
67,200
-32,600
| -33% | -$1.11M |
|
1774
PUT
Ball Corp
BALL
$17B
| $2.26M | ﹤0.01% |
44,200
-86,100
| -66% | -$4.46M |
|
1775
PUT
Ambev
ABEV
$47.3B
| $2.25M | ﹤0.01% |
828,800
-6,700
| -0.8% | -$19.5K |
|
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.