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 | |
|---|---|---|---|---|---|---|
|
MYOV
4276
DELISTED
Myovant Sciences Ltd.
MYOV
| $191K | ﹤0.01% |
7,089
-7,022
| -50% | -$185K |
|
4277
ARK Innovation ETF
ARKK
$5.59B
| $190K | ﹤0.01% |
6,112
+3,700
| +153% | +$132K |
|
4278
CALL
Burford Capital
BUR
$914M
| $190K | ﹤0.01% |
23,400
-200
| -0.8% | -$1.66K |
|
4279
CALL
Sprinklr
CXM
$1.51B
| $190K | ﹤0.01% |
23,300
-6,400
| -22% | -$55.4K |
|
4280
CALL
iShares Core Dividend ETF
DIVB
$1.71B
| $190K | ﹤0.01% |
5,600
+2,700
| +93% | +$100K |
|
4281
CALL
Delek Logistics
DKL
$3.12B
| $190K | ﹤0.01% |
4,200
-11,700
| -74% | -$599K |
|
4282
PUT
Amdocs
DOX
$6.03B
| $190K | ﹤0.01% |
2,100
+1,900
| +950% | +$162K |
|
4283
PUT
Editas Medicine
EDIT
$399M
| $190K | ﹤0.01% |
21,500
-31,900
| -60% | -$350K |
|
4284
CALL
Establishment Labs
ESTA
$2.71B
| $190K | ﹤0.01% |
2,900
+2,600
| +867% | +$157K |
|
4285
CALL
Lands' End
LE
$378M
| $190K | ﹤0.01% |
+25,100
| New | +$230K |
|
|
TGB
4286
CALL
Trekor Metals
TGB
$2.45B
| $190K | ﹤0.01% |
129,400
+46,400
| +56% | +$58.6K |
|
4287
PUT
Trupanion
TRUP
$1.13B
| $190K | ﹤0.01% |
4,000
-41,800
| -91% | -$2.18M |
|
4288
Vanguard S&P Small-Cap 600 ETF
VIOO
$4.12B
| $190K | ﹤0.01% |
2,198
+1,338
| +156% | +$119K |
|
|
STER
4289
PUT
DELISTED
Sterling Check Corp. Common Stock
STER
| $190K | ﹤0.01% |
+12,300
| New | +$199K |
|
|
TWNK
4290
CALL
DELISTED
Hostess Brands, Inc. Class A Common Stock
TWNK
| $190K | ﹤0.01% |
8,500
+1,000
| +13% | +$25.2K |
|
4291
CALL
CMS Energy
CMS
$23B
| $189K | ﹤0.01% |
3,000
-12,400
| -81% | -$733K |
|
4292
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$517M
| $189K | ﹤0.01% |
1,341
-52,945
| -98% | -$7.38M |
|
4293
CALL
Sportsman's Warehouse
SPWH
$44.9M
| $189K | ﹤0.01% |
20,100
-3,000
| -13% | -$27.6K |
|
|
ONIT
4294
CALL
Onity Group
ONIT
$342M
| $189K | ﹤0.01% |
6,200
-4,600
| -43% | -$144K |
|
4295
PUT
Booz Allen Hamilton
BAH
$8.44B
| $188K | ﹤0.01% |
1,800
-5,500
| -75% | -$572K |
|
4296
CALL
Destination XL Group
DXLG
$32.9M
| $188K | ﹤0.01% |
27,900
+24,400
| +697% | +$156K |
|
4297
PUT
eHealth
EHTH
$41.9M
| $188K | ﹤0.01% |
39,000
+2,100
| +6% | +$7.83K |
|
|
PENG
4298
PUT
Penguin Solutions Inc
PENG
$2.24B
| $188K | ﹤0.01% |
12,700
-500
| -4% | -$7.65K |
|
|
ABB
4299
DELISTED
ABB Ltd
ABB
| $188K | ﹤0.01% |
+6,175
| New | +$180K |
|
4300
PUT
CareDx
CDNA
$1.83B
| $187K | ﹤0.01% |
16,400
+15,400
| +1,540% | +$228K |
|
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.