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 | |
|---|---|---|---|---|---|---|
1451
PUT
Sprouts Farmers Market
SFM
$7.04B
| $4.93M | ﹤0.01% |
59,000
-31,300
| -35% | -$2.28M |
|
1452
PUT
BRC Group Holdings
RILY
$277M
| $4.93M | ﹤0.01% |
279,600
-311,800
| -53% | -$8.02M |
|
|
MRSH
1453
PUT
Marsh
MRSH
$86.3B
| $4.91M | ﹤0.01% |
23,300
+4,100
| +21% | +$842K |
|
1454
CALL
Penumbra
PEN
$12.5B
| $4.89M | ﹤0.01% |
27,200
+6,700
| +33% | +$1.34M |
|
1455
CALL
Dave & Buster's
PLAY
$343M
| $4.89M | ﹤0.01% |
122,800
+34,400
| +39% | +$1.79M |
|
1456
CALL
Brinker International
EAT
$8.02B
| $4.88M | ﹤0.01% |
67,400
+2,700
| +4% | +$161K |
|
1457
CALL
Elanco Animal Health
ELAN
$12.4B
| $4.86M | ﹤0.01% |
337,000
-4,300
| -1% | -$68.7K |
|
1458
PUT
Aflac
AFL
$63.9B
| $4.86M | ﹤0.01% |
54,400
+17,600
| +48% | +$1.51M |
|
1459
Sea Limited
SE
$61.2B
| $4.85M | ﹤0.01% |
67,891
-197,566
| -74% | -$13.1M |
|
1460
PUT
Aecom
ACM
$9.07B
| $4.84M | ﹤0.01% |
54,900
-12,400
| -18% | -$1.13M |
|
1461
Teva Pharmaceuticals
TEVA
$35.9B
| $4.82M | ﹤0.01% |
296,468
-361,219
| -55% | -$5.56M |
|
1462
CALL
Flutter Entertainment
FLUT
$17.6B
| $4.81M | ﹤0.01% |
+26,400
| New | +$5.08M |
|
|
WBA
1463
DELISTED
Walgreens Boots Alliance
WBA
| $4.81M | ﹤0.01% |
397,983
-220,648
| -36% | -$3.74M |
|
|
FLG
1464
CALL
Flagstar Bank National Association
FLG
$5.77B
| $4.8M | ﹤0.01% |
497,167
-185,733
| -27% | -$1.8M |
|
1465
Biogen
BIIB
$29.9B
| $4.8M | ﹤0.01% |
+20,713
| New | +$4.5M |
|
|
ACB
1466
PUT
Aurora Cannabis
ACB
$165M
| $4.8M | ﹤0.01% |
1,038,600
+571,700
| +122% | +$3.62M |
|
1467
PUT
Norfolk Southern
NSC
$78.8B
| $4.79M | ﹤0.01% |
22,300
-22,100
| -50% | -$5.13M |
|
1468
CALL
Labcorp
LH
$24.3B
| $4.78M | ﹤0.01% |
23,500
+9,600
| +69% | +$1.95M |
|
1469
CALL
McCormick & Company Non-Voting
MKC
$13.4B
| $4.77M | ﹤0.01% |
67,300
-35,800
| -35% | -$2.61M |
|
1470
Bilibili
BILI
$7.18B
| $4.77M | ﹤0.01% |
309,090
-26,614
| -8% | -$371K |
|
1471
CALL
NuScale Power
SMR
$2.8B
| $4.77M | ﹤0.01% |
407,700
+133,800
| +49% | +$953K |
|
1472
PUT
First Horizon
FHN
$12.1B
| $4.76M | ﹤0.01% |
302,100
-33,600
| -10% | -$509K |
|
1473
CALL
Lincoln National
LNC
$7.91B
| $4.76M | ﹤0.01% |
153,000
-31,400
| -17% | -$950K |
|
1474
CALL
Stellantis
STLA
$16.5B
| $4.75M | ﹤0.01% |
239,200
-75,000
| -24% | -$1.74M |
|
1475
CALL
Ferguson
FERG
$44.7B
| $4.74M | ﹤0.01% |
24,500
+8,200
| +50% | +$1.72M |
|
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.