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 | |
|---|---|---|---|---|---|---|
1376
Skyworks Solutions
SWKS
$9.06B
| $3.87M | ﹤0.01% |
42,495
+31,274
| +279% | +$2.8M |
|
1377
PUT
Intrepid Potash
IPI
$460M
| $3.87M | ﹤0.01% |
134,100
+117,100
| +689% | +$4.34M |
|
1378
Generac Holdings
GNRC
$11.9B
| $3.87M | ﹤0.01% |
+38,433
| New | +$4.35M |
|
1379
CALL
Virgin Galactic
SPCE
$320M
| $3.87M | ﹤0.01% |
55,545
+4,740
| +9% | +$442K |
|
1380
PUT
ChargePoint
CHPT
$133M
| $3.86M | ﹤0.01% |
20,265
-6,420
| -24% | -$1.56M |
|
1381
CALL
Church & Dwight Co
CHD
$23.1B
| $3.86M | ﹤0.01% |
47,900
+38,400
| +404% | +$2.95M |
|
1382
CALL
Goodyear
GT
$2.07B
| $3.85M | ﹤0.01% |
379,700
-37,400
| -9% | -$409K |
|
|
TYNS
1383
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $3.85M | ﹤0.01% |
54,200
-21,400
| -28% | -$1.52M |
|
1384
PUT
Alpha Metallurgical Resources
AMR
$1.82B
| $3.85M | ﹤0.01% |
26,300
-4,800
| -15% | -$758K |
|
1385
CALL
Tencent Music
TME
$14.5B
| $3.85M | ﹤0.01% |
464,700
-104,700
| -18% | -$588K |
|
1386
Intuit
INTU
$81.1B
| $3.83M | ﹤0.01% |
9,835
-13,460
| -58% | -$5.34M |
|
1387
CALL
ZTO Express
ZTO
$18.2B
| $3.81M | ﹤0.01% |
142,000
+32,100
| +29% | +$738K |
|
1388
PUT
Viatris
VTRS
$20.1B
| $3.81M | ﹤0.01% |
342,000
+173,300
| +103% | +$1.81M |
|
1389
Veeva Systems
VEEV
$30.3B
| $3.8M | ﹤0.01% |
+23,576
| New | +$4.03M |
|
1390
CALL
ALPS REIT Dividend Dogs ETF
RDOG
$11.6M
| $3.8M | ﹤0.01% |
100,000
-71,100
| -42% | -$2.78M |
|
1391
CALL
AngloGold Ashanti
AU
$40.3B
| $3.8M | ﹤0.01% |
195,700
-83,700
| -30% | -$1.37M |
|
1392
PUT
International Paper
IP
$22.3B
| $3.8M | ﹤0.01% |
110,100
-201,700
| -65% | -$6.97M |
|
1393
CALL
Weibo
WB
$1.9B
| $3.79M | ﹤0.01% |
198,500
+167,000
| +530% | +$2.52M |
|
1394
CALL
SL Green Realty
SLG
$3.88B
| $3.79M | ﹤0.01% |
113,100
+97,300
| +616% | +$3.7M |
|
1395
Madison Square Garden
MSGS
$9.54B
| $3.78M | ﹤0.01% |
+20,608
| New | +$3.23M |
|
1396
PUT
Sysco
SYY
$39.7B
| $3.78M | ﹤0.01% |
49,400
-52,600
| -52% | -$4.25M |
|
1397
PUT
Fair Isaac
FICO
$28.7B
| $3.77M | ﹤0.01% |
6,300
+4,700
| +294% | +$2.47M |
|
1398
Hasbro
HAS
$12.6B
| $3.77M | ﹤0.01% |
+61,731
| New | +$3.86M |
|
1399
PUT
Bank of Montreal
BMO
$125B
| $3.76M | ﹤0.01% |
41,500
-3,800
| -8% | -$352K |
|
1400
CALL
Alexandria Real Estate Equities
ARE
$8.88B
| $3.76M | ﹤0.01% |
25,800
+23,600
| +1,073% | +$3.41M |
|
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.