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 | |
|---|---|---|---|---|---|---|
2376
Lightspeed Commerce
LSPD
$1.3B
| $1.64M | ﹤0.01% |
+107,593
| New | +$1.76M |
|
|
ACLX
2377
CALL
DELISTED
Arcellx
ACLX
| $1.63M | ﹤0.01% |
21,300
+20,000
| +1,538% | +$1.73M |
|
2378
ZIM Integrated Shipping Services
ZIM
$3B
| $1.63M | ﹤0.01% |
75,968
-44,398
| -37% | -$976K |
|
|
PRMB
2379
CALL
Primo Brands
PRMB
$8.24B
| $1.63M | ﹤0.01% |
+52,900
| New | +$1.57M |
|
|
NKLA
2380
PUT
DELISTED
Nikola Corporation Common Stock
NKLA
| $1.62M | ﹤0.01% |
1,365,200
+861,300
| +171% | +$2.46M |
|
2381
PUT
BlackBerry
BB
$5.01B
| $1.62M | ﹤0.01% |
429,500
+185,300
| +76% | +$492K |
|
2382
PUT
Life Time Group Holdings
LTH
$9.42B
| $1.62M | ﹤0.01% |
73,200
+7,000
| +11% | +$167K |
|
2383
CALL
InMode
INMD
$872M
| $1.62M | ﹤0.01% |
96,900
-28,200
| -23% | -$500K |
|
2384
CALL
TransAlta
TAC
$4.34B
| $1.62M | ﹤0.01% |
114,400
+109,100
| +2,058% | +$1.25M |
|
2385
CALL
WEC Energy
WEC
$37.7B
| $1.62M | ﹤0.01% |
17,200
-2,300
| -12% | -$223K |
|
2386
CALL
Telus
TU
$16B
| $1.62M | ﹤0.01% |
119,200
-237,200
| -67% | -$3.66M |
|
|
ETHU
2387
2x Ether ETF
ETHU
$722M
| $1.61M | ﹤0.01% |
+10,320
| New | +$1.55M |
|
2388
CALL
Bausch Health
BHC
$1.65B
| $1.6M | ﹤0.01% |
199,100
+34,100
| +21% | +$281K |
|
2389
Keurig Dr Pepper
KDP
$40.4B
| $1.6M | ﹤0.01% |
+49,884
| New | +$1.69M |
|
2390
PUT
Vista Energy
VIST
$7.75B
| $1.6M | ﹤0.01% |
29,600
+23,800
| +410% | +$1.23M |
|
2391
CALL
Northern Trust
NTRS
$22.2B
| $1.6M | ﹤0.01% |
15,600
-12,900
| -45% | -$1.32M |
|
2392
CALL
Packaging Corp of America
PKG
$22.7B
| $1.6M | ﹤0.01% |
7,100
-4,800
| -40% | -$1.11M |
|
2393
CALL
Bumble
BMBL
$367M
| $1.6M | ﹤0.01% |
196,200
-6,000
| -3% | -$46.3K |
|
|
PPL
2394
PPL Corp
PPL
$27.3B
| $1.59M | ﹤0.01% |
49,058
+41,861
| +582% | +$1.38M |
|
2395
CALL
BioMarin Pharmaceuticals
BMRN
$11.5B
| $1.59M | ﹤0.01% |
24,200
-26,900
| -53% | -$1.8M |
|
2396
PUT
Forward Air
FWRD
$482M
| $1.59M | ﹤0.01% |
49,300
-221,700
| -82% | -$7.74M |
|
2397
Nutrien
NTR
$32.7B
| $1.59M | ﹤0.01% |
+35,517
| New | +$1.69M |
|
2398
PUT
Sunoco
SUN
$14.2B
| $1.59M | ﹤0.01% |
30,900
-42,200
| -58% | -$2.23M |
|
2399
Analog Devices
ADI
$181B
| $1.59M | ﹤0.01% |
7,475
-34,393
| -82% | -$7.6M |
|
2400
PUT
Ares Capital
ARCC
$13.5B
| $1.59M | ﹤0.01% |
72,500
-11,300
| -13% | -$244K |
|
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.