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 | |
|---|---|---|---|---|---|---|
3526
Imperial Petroleum
IMPP
$217M
| $505K | ﹤0.01% |
167,866
-445,645
| -73% | -$1.53M |
|
3527
Geron
GERN
$949M
| $504K | ﹤0.01% |
+142,582
| New | +$570K |
|
3528
CALL
Heartland Express
HTLD
$1.06B
| $504K | ﹤0.01% |
45,000
+34,300
| +321% | +$403K |
|
|
PPLI
3529
CALL
People Inc
PPLI
$3.15B
| $504K | ﹤0.01% |
14,262
-24,015
| -63% | -$962K |
|
3530
CALL
OR Royalties Inc
OR
$5.54B
| $503K | ﹤0.01% |
27,800
-44,400
| -61% | -$864K |
|
3531
CALL
Pegasystems
PEGA
$4.7B
| $503K | ﹤0.01% |
10,800
-13,600
| -56% | -$582K |
|
3532
Coca-Cola Europacific Partners
CCEP
$48.1B
| $502K | ﹤0.01% |
+6,536
| New | +$505K |
|
3533
CALL
Brookfield Renewable
BEP
$9.74B
| $501K | ﹤0.01% |
22,000
+4,500
| +26% | +$115K |
|
3534
CALL
B2Gold
BTG
$5.16B
| $501K | ﹤0.01% |
205,400
+89,400
| +77% | +$263K |
|
3535
Jefferies Financial Group
JEF
$13B
| $501K | ﹤0.01% |
6,397
+3,488
| +120% | +$251K |
|
3536
PUT
Kaspi.kz JSC
KSPI
$16.4B
| $501K | ﹤0.01% |
5,300
+4,300
| +430% | +$460K |
|
3537
CALL
Mirum Pharmaceuticals
MIRM
$6.96B
| $500K | ﹤0.01% |
12,100
-6,500
| -35% | -$271K |
|
3538
PUT
Emcor
EME
$33B
| $499K | ﹤0.01% |
1,100
-1,300
| -54% | -$615K |
|
|
3539
PUT
Geron
GERN
$949M
| $499K | ﹤0.01% |
141,000
-15,600
| -10% | -$62.3K |
|
3540
CALL
TriNet
TNET
$2.94B
| $499K | ﹤0.01% |
5,500
+4,900
| +817% | +$453K |
|
3541
Liberty Media Series C
FWONK
$24.6B
| $498K | ﹤0.01% |
+5,380
| New | +$457K |
|
3542
PUT
Kratos Defense & Security Solutions
KTOS
$9.27B
| $498K | ﹤0.01% |
18,900
+6,200
| +49% | +$159K |
|
3543
PUT
NCR Atleos
NATL
$3.47B
| $498K | ﹤0.01% |
14,700
-3,600
| -20% | -$109K |
|
3544
PUT
Halozyme
HALO
$9.66B
| $497K | ﹤0.01% |
10,400
-12,400
| -54% | -$636K |
|
3545
CALL
Veritone
VERI
$100M
| $497K | ﹤0.01% |
151,600
+106,900
| +239% | +$346K |
|
3546
CALL
NiSource
NI
$22B
| $496K | ﹤0.01% |
13,500
+7,000
| +108% | +$251K |
|
3547
CALL
Phinia Inc
PHIN
$2.91B
| $496K | ﹤0.01% |
10,300
-4,600
| -31% | -$227K |
|
3548
Turning Point Brands
TPB
$1.52B
| $496K | ﹤0.01% |
8,263
+5,624
| +213% | +$300K |
|
3549
PUT
Solventum
SOLV
$13.9B
| $495K | ﹤0.01% |
7,500
-60,900
| -89% | -$4.26M |
|
3550
CALL
Globant
GLOB
$1.41B
| $493K | ﹤0.01% |
2,300
-900
| -28% | -$196K |
|
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.