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 | |
|---|---|---|---|---|---|---|
3601
PUT
Vanguard Total International Stock ETF
VXUS
$153B
| $336K | ﹤0.01% |
6,500
+4,300
| +195% | +$215K |
|
3602
PUT
Woodside Energy
WDS
$42.1B
| $336K | ﹤0.01% |
13,900
+8,800
| +173% | +$209K |
|
3603
CALL
Cactus
WHD
$3.69B
| $336K | ﹤0.01% |
6,700
-6,600
| -50% | -$331K |
|
|
DEA
3604
CALL
Easterly Government Properties
DEA
$1.17B
| $335K | ﹤0.01% |
9,400
-5,040
| -35% | -$196K |
|
3605
CALL
Garrett Motion
GTX
$5.6B
| $335K | ﹤0.01% |
44,000
-15,100
| -26% | -$106K |
|
3606
PUT
BlueLinx
BXC
$465M
| $334K | ﹤0.01% |
4,700
+1,600
| +52% | +$109K |
|
|
CPRX
3607
CALL
DELISTED
Catalyst Pharmaceutical
CPRX
| $334K | ﹤0.01% |
18,000
-5,500
| -23% | -$84.7K |
|
3608
Hims & Hers Health
HIMS
$6.79B
| $334K | ﹤0.01% |
52,212
-17,498
| -25% | -$99.6K |
|
3609
PUT
Iridium Communications
IRDM
$4.81B
| $334K | ﹤0.01% |
6,500
+2,900
| +81% | +$146K |
|
|
OLPX
3610
DELISTED
Olaplex Holdings
OLPX
| $334K | ﹤0.01% |
64,219
-12,455
| -16% | -$74K |
|
|
MRNS
3611
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $334K | ﹤0.01% |
84,005
+50,663
| +152% | +$249K |
|
3612
PUT
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$4.95B
| $333K | ﹤0.01% |
11,500
-1,500
| -12% | -$43.7K |
|
3613
CALL
Ultragenyx Pharmaceutical
RARE
$2.56B
| $333K | ﹤0.01% |
7,200
-5,100
| -41% | -$201K |
|
3614
CALL
Vanguard S&P 500 Growth ETF
VOOG
$25.2B
| $333K | ﹤0.01% |
13,200
+1,800
| +16% | +$65K |
|
3615
PUT
Delek US
DK
$3.85B
| $332K | ﹤0.01% |
12,300
-57,300
| -82% | -$1.69M |
|
3616
PUT
Weibo
WB
$1.95B
| $332K | ﹤0.01% |
17,400
+6,100
| +54% | +$91.9K |
|
3617
PUT
Costamare
CMRE
$1.86B
| $331K | ﹤0.01% |
35,700
-20,300
| -36% | -$191K |
|
3618
PUT
Centrus Energy
LEU
$3.34B
| $331K | ﹤0.01% |
10,200
+6,800
| +200% | +$259K |
|
3619
Invesco Golden Dragon China ETF
PGJ
$94.7M
| $331K | ﹤0.01% |
+12,115
| New | +$295K |
|
3620
PUT
Cooper Companies
COO
$14.1B
| $330K | ﹤0.01% |
4,000
+2,400
| +150% | +$177K |
|
3621
CALL
Icon
ICLR
$13.9B
| $330K | ﹤0.01% |
1,700
+500
| +42% | +$99.1K |
|
3622
PUT
System1
SST
$15M
| $330K | ﹤0.01% |
7,040
+2,870
| +69% | +$147K |
|
3623
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.84B
| $329K | ﹤0.01% |
9,256
+7,810
| +540% | +$271K |
|
3624
CALL
Mid-America Apartment Communities
MAA
$15.8B
| $329K | ﹤0.01% |
2,100
-1,500
| -42% | -$234K |
|
3625
PUT
SSR Mining
SSRM
$5.27B
| $329K | ﹤0.01% |
21,000
-14,500
| -41% | -$212K |
|
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.