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 | |
|---|---|---|---|---|---|---|
1501
Marathon Petroleum
MPC
$90.3B
| $4.54M | ﹤0.01% |
+26,203
| New | +$4.87M |
|
1502
PUT
Knight Transportation
KNX
$11.8B
| $4.54M | ﹤0.01% |
90,900
-80,000
| -47% | -$3.92M |
|
1503
CALL
Kyndryl
KD
$2.66B
| $4.53M | ﹤0.01% |
172,100
+106,300
| +162% | +$2.55M |
|
1504
PUT
Concentrix
CNXC
$1.36B
| $4.52M | ﹤0.01% |
71,500
-24,800
| -26% | -$1.49M |
|
1505
CALL
Symbotic
SYM
$5.11B
| $4.52M | ﹤0.01% |
128,500
-46,300
| -26% | -$1.87M |
|
1506
CALL
Globant
GLOB
$1.35B
| $4.51M | ﹤0.01% |
25,300
+14,200
| +128% | +$2.5M |
|
1507
CALL
TripAdvisor
TRIP
$1.59B
| $4.5M | ﹤0.01% |
252,800
-306,500
| -55% | -$6.65M |
|
1508
PUT
American Eagle Outfitters
AEO
$2.85B
| $4.5M | ﹤0.01% |
225,400
+117,300
| +109% | +$2.68M |
|
1509
CALL
Equinor
EQNR
$95.9B
| $4.49M | ﹤0.01% |
157,200
-75,100
| -32% | -$2.09M |
|
1510
CALL
Textron
TXT
$16.6B
| $4.48M | ﹤0.01% |
52,200
+25,800
| +98% | +$2.3M |
|
1511
CALL
Brookfield Asset Management
BAM
$74B
| $4.48M | ﹤0.01% |
117,700
+27,800
| +31% | +$1.09M |
|
1512
Canadian Solar
CSIQ
$906M
| $4.47M | ﹤0.01% |
303,387
-129,488
| -30% | -$2.19M |
|
1513
CALL
Mine Safety
MSA
$6.74B
| $4.47M | ﹤0.01% |
23,800
+18,700
| +367% | +$3.48M |
|
|
1514
American Eagle Outfitters
AEO
$2.85B
| $4.46M | ﹤0.01% |
223,721
+222,952
| +28,992% | +$5.1M |
|
1515
CALL
Old Dominion Freight Line
ODFL
$48.5B
| $4.45M | ﹤0.01% |
25,200
+3,800
| +18% | +$717K |
|
1516
CALL
AerCap
AER
$23.9B
| $4.45M | ﹤0.01% |
47,700
-47,300
| -50% | -$4.21M |
|
1517
CALL
NetEase
NTES
$76.5B
| $4.44M | ﹤0.01% |
46,500
-52,200
| -53% | -$4.97M |
|
1518
CALL
Signet Jewelers
SIG
$3.55B
| $4.43M | ﹤0.01% |
49,500
-12,000
| -20% | -$1.19M |
|
1519
PUT
2x Long VIX Futures ETF
UVIX
$286M
| $4.43M | ﹤0.01% |
2,392
+965
| +68% | +$1.49M |
|
1520
PUT
RenaissanceRe
RNR
$13.8B
| $4.42M | ﹤0.01% |
19,800
+8,500
| +75% | +$1.9M |
|
1521
PUT
Golar LNG
GLNG
$4.95B
| $4.42M | ﹤0.01% |
141,100
-9,400
| -6% | -$248K |
|
1522
CALL
Gold Fields
GFI
$29.2B
| $4.42M | ﹤0.01% |
296,700
-74,800
| -20% | -$1.22M |
|
1523
CALL
Mativ Holdings
MATV
$448M
| $4.4M | ﹤0.01% |
259,500
+174,000
| +204% | +$3.1M |
|
1524
PUT
Cullen/Frost Bankers
CFR
$10.3B
| $4.4M | ﹤0.01% |
43,300
+7,400
| +21% | +$775K |
|
1525
CALL
Capri Holdings
CPRI
$1.77B
| $4.4M | ﹤0.01% |
132,900
+13,900
| +12% | +$503K |
|
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.