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 | |
|---|---|---|---|---|---|---|
1276
PUT
Bunge Global
BG
$23.7B
| $4.53M | ﹤0.01% |
45,400
-32,700
| -42% | -$3.14M |
|
1277
CALL
Kimbell Royalty Partners
KRP
$1.48B
| $4.53M | ﹤0.01% |
271,200
-68,600
| -20% | -$1.21M |
|
1278
CALL
PAR Technology
PAR
$642M
| $4.52M | ﹤0.01% |
173,300
+100,100
| +137% | +$2.58M |
|
|
RWT
1279
CALL
Redwood Trust
RWT
$626M
| $4.52M | ﹤0.01% |
668,200
+272,500
| +69% | +$1.9M |
|
1280
CALL
Arthur J. Gallagher & Co
AJG
$63.4B
| $4.51M | ﹤0.01% |
23,900
-4,400
| -16% | -$823K |
|
1281
PUT
Agilent Technologies
A
$39.2B
| $4.49M | ﹤0.01% |
30,000
+10,200
| +52% | +$1.46M |
|
1282
CALL
A.O. Smith
AOS
$8.35B
| $4.49M | ﹤0.01% |
78,400
+34,100
| +77% | +$1.91M |
|
1283
CALL
Vornado Realty Trust
VNO
$7.51B
| $4.48M | ﹤0.01% |
215,500
+10,100
| +5% | +$231K |
|
|
JPGE
1284
CALL
DELISTED
JPMorgan Diversified Return Global Equity ETF
JPGE
| $4.48M | ﹤0.01% |
82,300
+28,800
| +54% | +$1.57M |
|
1285
PUT
O'Reilly Automotive
ORLY
$71.6B
| $4.47M | ﹤0.01% |
79,500
-181,500
| -70% | -$9.76M |
|
1286
PUT
MSCI
MSCI
$40.1B
| $4.46M | ﹤0.01% |
9,600
-25,500
| -73% | -$11.9M |
|
1287
CALL
Aehr Test Systems
AEHR
$2.5B
| $4.45M | ﹤0.01% |
221,600
+182,600
| +468% | +$3.91M |
|
1288
PUT
Kinross Gold
KGC
$28.4B
| $4.45M | ﹤0.01% |
1,089,100
+371,800
| +52% | +$1.47M |
|
1289
PUT
Emerson Electric
EMR
$82.6B
| $4.44M | ﹤0.01% |
46,200
-15,000
| -25% | -$1.35M |
|
1290
CALL
Altimmune
ALT
$543M
| $4.44M | ﹤0.01% |
269,700
+85,600
| +46% | +$962K |
|
|
SRG
1291
PUT
Seritage Growth Properties
SRG
$131M
| $4.43M | ﹤0.01% |
374,500
+230,700
| +160% | +$2.56M |
|
1292
CALL
Dynatrace
DT
$12.1B
| $4.43M | ﹤0.01% |
115,600
+2,400
| +2% | +$87.2K |
|
1293
CALL
American Eagle Outfitters
AEO
$2.9B
| $4.42M | ﹤0.01% |
316,900
-54,500
| -15% | -$698K |
|
|
HZNP
1294
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $4.41M | ﹤0.01% |
+38,793
| New | +$3.22M |
|
|
DISH
1295
CALL
DELISTED
DISH Network Corp.
DISH
| $4.41M | ﹤0.01% |
314,100
+157,300
| +100% | +$2.32M |
|
1296
PUT
WillScot Mobile Mini Holdings
WSC
$4.81B
| $4.41M | ﹤0.01% |
97,600
+83,800
| +607% | +$3.76M |
|
1297
PUT
Goodyear
GT
$2.07B
| $4.41M | ﹤0.01% |
434,200
+39,000
| +10% | +$426K |
|
1298
PUT
Asana
ASAN
$1.57B
| $4.4M | ﹤0.01% |
319,700
+141,600
| +80% | +$2.57M |
|
1299
PUT
Scotiabank
BNS
$106B
| $4.38M | ﹤0.01% |
89,500
+64,500
| +258% | +$3.18M |
|
1300
CALL
Digital Realty Trust
DLR
$74.6B
| $4.36M | ﹤0.01% |
43,500
+17,400
| +67% | +$1.78M |
|
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.