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 | |
|---|---|---|---|---|---|---|
|
INN
4751
Summit Hotel Properties
INN
$766M
| $130K | ﹤0.01% |
+18,059
| New | +$141K |
|
4752
Meritage Homes
MTH
$4.78B
| $130K | ﹤0.01% |
+2,840
| New | +$115K |
|
4753
PUT
Microvision
MVIS
$84.8M
| $130K | ﹤0.01% |
55,500
-10,800
| -16% | -$33.5K |
|
4754
ProQR Therapeutics
PRQR
$244M
| $130K | ﹤0.01% |
35,365
+32,922
| +1,348% | +$43.1K |
|
4755
Invesco NASDAQ Next Gen 100 ETF
QQQJ
$1.11B
| $130K | ﹤0.01% |
+5,468
| New | +$130K |
|
4756
PUT
Schrodinger
SDGR
$1.13B
| $130K | ﹤0.01% |
7,000
-1,400
| -17% | -$29K |
|
4757
Talos Energy
TALO
$2.38B
| $130K | ﹤0.01% |
6,909
-2,584
| -27% | -$51.9K |
|
4758
PUT
Trinity Industries
TRN
$2.92B
| $130K | ﹤0.01% |
4,400
+2,500
| +132% | +$69.7K |
|
4759
PUT
CVR Partners
UAN
$1.3B
| $130K | ﹤0.01% |
1,300
-4,500
| -78% | -$529K |
|
4760
Wingstop
WING
$3.8B
| $130K | ﹤0.01% |
947
+652
| +221% | +$96.2K |
|
4761
PUT
Alector
ALEC
$169M
| $129K | ﹤0.01% |
+14,000
| New | +$122K |
|
4762
CALL
Axos Financial
AX
$5.58B
| $129K | ﹤0.01% |
3,400
-3,900
| -53% | -$149K |
|
4763
CALL
Fortune Brands Innovations
FBIN
$5.86B
| $129K | ﹤0.01% |
6,200
+2,222
| +56% | +$117K |
|
|
GOGL
4764
DELISTED
Golden Ocean Group
GOGL
| $129K | ﹤0.01% |
14,937
-8,027
| -35% | -$69.8K |
|
|
NXDR
4765
CALL
Nextdoor Holdings
NXDR
$885M
| $129K | ﹤0.01% |
62,900
+10,100
| +19% | +$23.6K |
|
4766
Live Nation Entertainment
LYV
$42.9B
| $129K | ﹤0.01% |
+1,852
| New | +$137K |
|
|
MOMO
4767
Hello Group
MOMO
$867M
| $129K | ﹤0.01% |
14,469
-45,774
| -76% | -$271K |
|
4768
Cambria Tail Risk ETF
TAIL
$150M
| $129K | ﹤0.01% |
8,490
+1,959
| +30% | +$30.8K |
|
4769
CALL
Vanguard Total International Stock ETF
VXUS
$151B
| $129K | ﹤0.01% |
2,500
-18,300
| -88% | -$916K |
|
4770
PUT
Global X S&P 500 Covered Call ETF
XYLD
$3.19B
| $129K | ﹤0.01% |
5,000
+4,900
| +4,900% | +$195K |
|
4771
CALL
Zymeworks
ZYME
$1.62B
| $129K | ﹤0.01% |
16,500
-47,900
| -74% | -$337K |
|
4772
Marathon Petroleum
MPC
$90.1B
| $128K | ﹤0.01% |
1,100
+200
| +22% | +$22.8K |
|
4773
Kartoon Studios
TOON
$34M
| $128K | ﹤0.01% |
27,686
-390
| -1% | -$2.52K |
|
|
WSR
4774
CALL
DELISTED
Whitestone REIT
WSR
| $128K | ﹤0.01% |
13,300
-2,200
| -14% | -$20.2K |
|
|
XXII
4775
CALL
22nd Century Group
XXII
$1.28M
| – | – |
0
| – | – |
|
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.