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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3601
PUT
MACOM Technology Solutions
MTSI
$19.2B
| $535K | ﹤0.01% |
4,800
-20,100
| -81% | -$2.05M |
|
3602
CALL
Simplify US Equity PLUS Convexity ETF
SPYC
$112M
| $534K | ﹤0.01% |
23,400
-23,800
| -50% | -$824K |
|
3603
Ameren
AEE
$31.4B
| $533K | ﹤0.01% |
7,505
+184
| +3% | +$13.4K |
|
3604
CALL
Jefferies Financial Group
JEF
$13.3B
| $532K | ﹤0.01% |
10,700
-100
| -0.9% | -$4.49K |
|
3605
PUT
Allison Transmission
ALSN
$10B
| $531K | ﹤0.01% |
7,000
+4,700
| +204% | +$360K |
|
3606
Banc of California
BANC
$3.22B
| $531K | ﹤0.01% |
41,607
-3,979
| -9% | -$55K |
|
3607
CALL
IDT Corp
IDT
$1.69B
| $531K | ﹤0.01% |
14,800
-11,500
| -44% | -$432K |
|
3608
PUT
nCino
NCNO
$2.05B
| $531K | ﹤0.01% |
16,900
+12,400
| +276% | +$388K |
|
3609
PUT
Coeur Mining
CDE
$15.5B
| $530K | ﹤0.01% |
94,400
+57,700
| +157% | +$298K |
|
3610
PUT
Xponential Fitness
XPOF
$278M
| $530K | ﹤0.01% |
34,000
-14,800
| -30% | -$183K |
|
3611
CALL
CVB Financial
CVBF
$4B
| $529K | ﹤0.01% |
30,700
-300
| -1% | -$5K |
|
3612
CALL
Outset Medical
OM
$84.7M
| $529K | ﹤0.01% |
9,167
-346
| -4% | -$17K |
|
3613
PUT
VinFast Auto
VFS
$7B
| $529K | ﹤0.01% |
123,100
+40,100
| +48% | +$156K |
|
3614
PUT
Cal-Maine
CALM
$4.39B
| $525K | ﹤0.01% |
8,600
-4,000
| -32% | -$237K |
|
3615
CSX Corp
CSX
$95.4B
| $525K | ﹤0.01% |
+15,703
| New | +$533K |
|
3616
PUT
Energizer
ENR
$1.5B
| $525K | ﹤0.01% |
17,800
-1,400
| -7% | -$40.4K |
|
3617
CALL
Federal Realty Investment Trust
FRT
$11B
| $525K | ﹤0.01% |
5,200
+2,500
| +93% | +$252K |
|
3618
PUT
NatWest
NWG
$70.9B
| $525K | ﹤0.01% |
+65,400
| New | +$508K |
|
3619
PUT
Zebra Technologies
ZBRA
$13.1B
| $525K | ﹤0.01% |
1,700
-41,600
| -96% | -$12.7M |
|
3620
PUT
Boise Cascade
BCC
$2.83B
| $524K | ﹤0.01% |
4,400
-31,100
| -88% | -$4.22M |
|
3621
PUT
Cirrus Logic
CRUS
$6.84B
| $523K | ﹤0.01% |
4,100
-3,900
| -49% | -$409K |
|
3622
Evolent Health
EVH
$407M
| $523K | ﹤0.01% |
+27,364
| New | +$699K |
|
3623
Simply Good Foods
SMPL
$972M
| $523K | ﹤0.01% |
+14,490
| New | +$518K |
|
3624
CALL
Andersons Inc
ANDE
$2.47B
| $520K | ﹤0.01% |
10,500
+7,600
| +262% | +$406K |
|
3625
PUT
DigitalBridge
DBRG
$2.93B
| $520K | ﹤0.01% |
38,000
-600
| -2% | -$9.04K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.