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 | |
|---|---|---|---|---|---|---|
3451
Vermilion Energy
VET
$1.62B
| $538K | ﹤0.01% |
57,339
+47,668
| +493% | +$464K |
|
|
SILV
3452
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $538K | ﹤0.01% |
59,197
-99,658
| -63% | -$1.01M |
|
3453
PUT
AllianceBernstein
AB
$3.54B
| $537K | ﹤0.01% |
14,500
+1,500
| +12% | +$54.7K |
|
|
GOLD
3454
CALL
Gold.com Inc
GOLD
$1.19B
| $537K | ﹤0.01% |
19,600
-11,100
| -36% | -$377K |
|
3455
CALL
Greif
GEF
$4.56B
| $537K | ﹤0.01% |
8,800
-14,800
| -63% | -$966K |
|
3456
PUT
Kosmos Energy
KOS
$1.45B
| $537K | ﹤0.01% |
157,100
-10,800
| -6% | -$41.1K |
|
3457
CALL
Nexstar Media Group
NXST
$5.67B
| $537K | ﹤0.01% |
3,400
-1,800
| -35% | -$302K |
|
3458
ProShares UltraShort S&P500
SDS
$424M
| $537K | ﹤0.01% |
5,468
+3,752
| +219% | +$371K |
|
3459
ProShares UltraPro Russell2000
URTY
$329M
| $537K | ﹤0.01% |
+10,931
| New | +$611K |
|
3460
PUT
East-West Bancorp
EWBC
$17.8B
| $536K | ﹤0.01% |
5,600
+2,800
| +100% | +$275K |
|
3461
PUT
Lithia Motors
LAD
$7.88B
| $536K | ﹤0.01% |
1,500
-9,500
| -86% | -$3.35M |
|
3462
CALL
Stratasys
SSYS
$700M
| $536K | ﹤0.01% |
60,300
+50,500
| +515% | +$435K |
|
3463
CALL
Veeco
VECO
$2.96B
| $536K | ﹤0.01% |
20,000
+1,600
| +9% | +$46.4K |
|
3464
PUT
Morgan Stanley Direct Lending Fund
MSDL
$1.3B
| $535K | ﹤0.01% |
25,900
+16,800
| +185% | +$344K |
|
|
SAND
3465
DELISTED
Sandstorm Gold
SAND
| $535K | ﹤0.01% |
96,015
+21,452
| +29% | +$124K |
|
|
PPLI
3466
PUT
People Inc
PPLI
$3.15B
| $534K | ﹤0.01% |
15,116
-17,553
| -54% | -$703K |
|
3467
Nordic American Tanker
NAT
$1.37B
| $534K | ﹤0.01% |
+213,741
| New | +$657K |
|
3468
Adient
ADNT
$1.62B
| $533K | ﹤0.01% |
+30,979
| New | +$619K |
|
3469
CALL
Leonardo DRS
DRS
$12.9B
| $533K | ﹤0.01% |
16,500
-6,500
| -28% | -$211K |
|
|
GRAL
3470
PUT
GRAIL Inc
GRAL
$2.87B
| $533K | ﹤0.01% |
29,900
+4,700
| +19% | +$76.4K |
|
3471
PUT
Bloomin' Brands
BLMN
$731M
| $532K | ﹤0.01% |
43,600
+32,300
| +286% | +$463K |
|
3472
PUT
Bit Digital
BTBT
$477M
| $532K | ﹤0.01% |
181,600
+58,300
| +47% | +$229K |
|
3473
Chord Energy
CHRD
$7.42B
| $532K | ﹤0.01% |
+4,551
| New | +$572K |
|
3474
CALL
Howard Hughes
HHH
$3.93B
| $531K | ﹤0.01% |
10,000
-23,700
| -70% | -$1.89M |
|
3475
Allot
ALLT
$373M
| $530K | ﹤0.01% |
89,211
+27,703
| +45% | +$112K |
|
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.