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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ETWO
3651
CALL
DELISTED
E2open Parent Holdings
ETWO
| $451K | ﹤0.01% |
169,800
+57,100
| +51% | +$179K |
|
3652
CALL
Privia Health
PRVA
$3.11B
| $451K | ﹤0.01% |
23,100
+2,500
| +12% | +$49.5K |
|
3653
PUT
Atkore
ATKR
$2.54B
| $450K | ﹤0.01% |
5,400
+1,900
| +54% | +$167K |
|
3654
Chemours
CC
$2.55B
| $450K | ﹤0.01% |
26,685
-13,596
| -34% | -$265K |
|
3655
Invesco DB Commodity Index Tracking Fund
DBC
$1.67B
| $450K | ﹤0.01% |
21,055
-7,656
| -27% | -$171K |
|
3656
CALL
Graphic Packaging
GPK
$3.3B
| $450K | ﹤0.01% |
16,600
+13,600
| +453% | +$393K |
|
3657
CALL
Pembina Pipeline
PBA
$29B
| $450K | ﹤0.01% |
12,200
+6,200
| +103% | +$253K |
|
3658
PUT
Alliant Energy
LNT
$19.1B
| $449K | ﹤0.01% |
7,600
-11,500
| -60% | -$695K |
|
3659
CALL
Public Storage
PSA
$60.5B
| $449K | ﹤0.01% |
1,500
-4,000
| -73% | -$1.33M |
|
3660
PUT
Wave Life Sciences
WVE
$1.14B
| $449K | ﹤0.01% |
36,300
+13,300
| +58% | +$178K |
|
|
MTTR
3661
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $448K | ﹤0.01% |
94,642
-1,291
| -1% | -$6.13K |
|
3662
Procore
PCOR
$7.03B
| $447K | ﹤0.01% |
5,966
-8,359
| -58% | -$593K |
|
|
CMA
3663
DELISTED
Comerica
CMA
| $446K | ﹤0.01% |
7,211
-1,091
| -13% | -$70.9K |
|
3664
CALL
Imperial Petroleum
IMPP
$217M
| $446K | ﹤0.01% |
148,200
+10,800
| +8% | +$37K |
|
3665
PUT
Pacira BioSciences
PCRX
$1.04B
| $446K | ﹤0.01% |
23,700
-1,900
| -7% | -$33.4K |
|
3666
CALL
Simplify US Equity PLUS Convexity ETF
SPYC
$111M
| $446K | ﹤0.01% |
21,100
+14,700
| +230% | +$569K |
|
3667
CALL
Cardlytics
CDLX
$21.7M
| $445K | ﹤0.01% |
12,020
-8,500
| -41% | -$325K |
|
|
LKFT
3668
CALL
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.84B
| $445K | ﹤0.01% |
16,200
+11,600
| +252% | +$323K |
|
3669
CALL
SandRidge Energy
SD
$496M
| $445K | ﹤0.01% |
52,800
-31,400
| -37% | -$363K |
|
3670
PUT
Xcel Energy
XEL
$50.4B
| $445K | ﹤0.01% |
6,600
-14,200
| -68% | -$952K |
|
3671
PACS Group
PACS
$7.45B
| $445K | ﹤0.01% |
33,951
+30,714
| +949% | +$788K |
|
3672
ProShares Ether Strategy ETF
EETH
$56.5M
| $444K | ﹤0.01% |
6,777
+5,299
| +359% | +$325K |
|
|
SPR
3673
DELISTED
Spirit AeroSystems
SPR
| $444K | ﹤0.01% |
+13,049
| New | +$421K |
|
3674
CALL
Universal Corp
UVV
$1.34B
| $444K | ﹤0.01% |
8,100
+2,600
| +47% | +$139K |
|
3675
PUT
National Beverage
FIZZ
$2.93B
| $443K | ﹤0.01% |
10,400
-800
| -7% | -$37.4K |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.