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 | |
|---|---|---|---|---|---|---|
6626
Agilysys
AGYS
$2.97B
| $25K | ﹤0.01% |
318
-382
| -55% | -$24.4K |
|
6627
PUT
Assurant
AIZ
$13.8B
| $25K | ﹤0.01% |
200
-4,000
| -95% | -$533K |
|
6628
PUT
Aemetis
AMTX
$106M
| $25K | ﹤0.01% |
6,500
+1,800
| +38% | +$10.2K |
|
6629
Brookfield Renewable
BEPC
$6.08B
| $25K | ﹤0.01% |
924
+97
| +12% | +$3K |
|
6630
PUT
Bioceres Crop Solutions
BIOX
$23M
| $25K | ﹤0.01% |
2,100
-6,100
| -74% | -$79.2K |
|
6631
PUT
Broadstone Net Lease
BNL
$4.11B
| $25K | ﹤0.01% |
1,600
-100
| -6% | -$1.67K |
|
6632
PUT
BellRing Brands
BRBR
$1.44B
| $25K | ﹤0.01% |
1,000
-600
| -38% | -$14.4K |
|
6633
CALL
CBAK Energy Technology Ltd
CBAT
$44.3M
| $25K | ﹤0.01% |
26,000
-100
| -0.4% | -$116 |
|
|
DADA
6634
DELISTED
Dada Nexus
DADA
| $25K | ﹤0.01% |
3,692
-413
| -10% | -$2.16K |
|
6635
CALL
Dine Brands
DIN
$456M
| $25K | ﹤0.01% |
400
-18,800
| -98% | -$1.31M |
|
6636
CALL
Douglas Elliman
DOUG
$154M
| $25K | ﹤0.01% |
6,510
-6,825
| -51% | -$27.2K |
|
6637
PUT
Vaalco Energy
EGY
$570M
| $25K | ﹤0.01% |
5,700
-10,800
| -65% | -$54.2K |
|
6638
PUT
EverQuote
EVER
$892M
| $25K | ﹤0.01% |
1,700
-1,200
| -41% | -$11.3K |
|
|
EVRI
6639
PUT
DELISTED
Everi Holdings
EVRI
| $25K | ﹤0.01% |
1,800
-500
| -22% | -$8.31K |
|
6640
Forward Air
FWRD
$444M
| $25K | ﹤0.01% |
244
+186
| +321% | +$19.5K |
|
6641
GameStop
GME
$9.75B
| $25K | ﹤0.01% |
1,400
+400
| +40% | +$9.81K |
|
6642
CALL
Innoviva
INVA
$1.55B
| $25K | ﹤0.01% |
1,900
-26,300
| -93% | -$346K |
|
6643
St. Joe Company
JOE
$3.54B
| $25K | ﹤0.01% |
+647
| New | +$23.2K |
|
6644
CALL
MasterCraft Boat Holdings
MCFT
$579M
| $25K | ﹤0.01% |
1,000
-3,500
| -78% | -$82.6K |
|
6645
PUT
MiMedx Group
MDXG
$602M
| $25K | ﹤0.01% |
9,200
-7,500
| -45% | -$22.4K |
|
6646
VanEck Agribusiness ETF
MOO
$972M
| $25K | ﹤0.01% |
+292
| New | +$25.6K |
|
6647
CALL
NovaGold Resources
NG
$2.56B
| $25K | ﹤0.01% |
4,300
-700
| -14% | -$3.73K |
|
6648
Insperity
NSP
$1.93B
| $25K | ﹤0.01% |
+223
| New | +$25.3K |
|
6649
CALL
Old National Bancorp
ONB
$10.2B
| $25K | ﹤0.01% |
1,400
+1,300
| +1,300% | +$23.9K |
|
6650
PUT
Par Pacific Holdings
PARR
$4.31B
| $25K | ﹤0.01% |
1,100
-3,300
| -75% | -$71.9K |
|
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.