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 | |
|---|---|---|---|---|---|---|
|
NSTG
2301
PUT
DELISTED
NanoString Technologies, Inc.
NSTG
| $1.19M | ﹤0.01% |
149,600
-106,700
| -42% | -$926K |
|
|
JPGE
2302
PUT
DELISTED
JPMorgan Diversified Return Global Equity ETF
JPGE
| $1.19M | ﹤0.01% |
21,900
-100
| -0.5% | -$5.44K |
|
2303
CALL
Knight Transportation
KNX
$11.8B
| $1.19M | ﹤0.01% |
22,700
+6,300
| +38% | +$326K |
|
2304
PUT
Southern Copper
SCCO
$141B
| $1.19M | ﹤0.01% |
21,251
-50,807
| -71% | -$2.59M |
|
|
INFN
2305
CALL
DELISTED
Infinera Corporation Common Stock
INFN
| $1.19M | ﹤0.01% |
176,500
+20,600
| +13% | +$125K |
|
2306
PUT
Anavex Life Sciences
AVXL
$222M
| $1.19M | ﹤0.01% |
128,300
-23,200
| -15% | -$248K |
|
2307
PUT
TherapeuticsMD
TXMD
$23.8M
| $1.19M | ﹤0.01% |
212,600
-8,400
| -4% | -$49.5K |
|
2308
Keurig Dr Pepper
KDP
$40.4B
| $1.19M | ﹤0.01% |
+33,274
| New | +$1.25M |
|
2309
CALL
UGI
UGI
$8B
| $1.19M | ﹤0.01% |
32,000
+24,000
| +300% | +$867K |
|
|
ENLC
2310
PUT
DELISTED
ENLINK MIDSTREAM, LLC
ENLC
| $1.19M | ﹤0.01% |
96,400
+73,100
| +314% | +$844K |
|
|
AYX
2311
PUT
DELISTED
Alteryx Inc
AYX
| $1.19M | ﹤0.01% |
23,400
+18,500
| +378% | +$883K |
|
2312
PUT
SandRidge Energy
SD
$510M
| $1.18M | ﹤0.01% |
69,500
-15,400
| -18% | -$288K |
|
2313
PUT
Alta Equipment Group
ALTG
$210M
| $1.18M | ﹤0.01% |
89,600
-48,200
| -35% | -$580K |
|
2314
Gray Television
GTN
$407M
| $1.18M | ﹤0.01% |
+105,545
| New | +$1.31M |
|
2315
CALL
Itron
ITRI
$3.73B
| $1.18M | ﹤0.01% |
23,200
+20,700
| +828% | +$1.02M |
|
2316
Fluor
FLR
$7.29B
| $1.17M | ﹤0.01% |
33,887
+27,397
| +422% | +$875K |
|
2317
CALL
Banco Bradesco
BBD
$38.1B
| $1.17M | ﹤0.01% |
484,375
+68,000
| +16% | +$220K |
|
2318
Invesco DB Base Metals Fund
DBB
$306M
| $1.17M | ﹤0.01% |
60,336
+59,546
| +7,537% | +$1.14M |
|
2319
CALL
Sociedad Química y Minera de Chile
SQM
$19.6B
| $1.17M | ﹤0.01% |
14,700
-8,800
| -37% | -$814K |
|
2320
PUT
ATI
ATI
$27B
| $1.17M | ﹤0.01% |
39,200
+35,600
| +989% | +$1.04M |
|
|
ABB
2321
CALL
DELISTED
ABB Ltd
ABB
| $1.17M | ﹤0.01% |
82,800
+25,400
| +44% | +$739K |
|
2322
CALL
Illinois Tool Works
ITW
$81.4B
| $1.17M | ﹤0.01% |
5,300
-5,100
| -49% | -$1.09M |
|
2323
PUT
Tilray
TLRY
$479M
| $1.17M | ﹤0.01% |
43,200
-16,140
| -27% | -$565K |
|
2324
CALL
Buckle
BKE
$2.19B
| $1.17M | ﹤0.01% |
25,700
+4,000
| +18% | +$162K |
|
2325
CALL
Atea Pharmaceuticals
AVIR
$379M
| $1.16M | ﹤0.01% |
241,600
-66,800
| -22% | -$338K |
|
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.