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 | |
|---|---|---|---|---|---|---|
526
CALL
Enovix
ENVX
$1.02B
| $25.3M | 0.02% |
1,868,000
+428,114
| +30% | +$3.58M |
|
|
MRO
527
PUT
DELISTED
Marathon Oil Corporation
MRO
| $25.2M | 0.02% |
878,100
-282,900
| -24% | -$7.84M |
|
528
CALL
Fortinet
FTNT
$114B
| $25.1M | 0.02% |
417,300
+34,200
| +9% | +$2.13M |
|
529
CALL
Nice
NICE
$5.19B
| $25.1M | 0.02% |
146,100
+35,300
| +32% | +$7.26M |
|
530
CALL
Teva Pharmaceuticals
TEVA
$35.1B
| $25.1M | 0.02% |
1,546,100
+460,800
| +42% | +$7.1M |
|
531
PUT
Williams-Sonoma
WSM
$26.2B
| $25M | 0.02% |
177,200
-189,400
| -52% | -$28.2M |
|
532
CALL
Synchrony
SYF
$24.5B
| $24.8M | 0.02% |
526,300
+117,500
| +29% | +$5.1M |
|
533
PUT
Philip Morris
PM
$303B
| $24.8M | 0.02% |
244,700
-1,500
| -0.6% | -$147K |
|
534
CALL
AstraZeneca
AZN
$263B
| $24.5M | 0.02% |
157,050
+13,400
| +9% | +$2.02M |
|
535
CALL
W.W. Grainger
GWW
$63.9B
| $24.4M | 0.02% |
27,000
+2,400
| +10% | +$2.26M |
|
536
PUT
Tractor Supply
TSCO
$15.4B
| $24.3M | 0.02% |
449,500
+128,000
| +40% | +$6.88M |
|
537
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$422M
| $24.2M | 0.02% |
103,160
-82,390
| -44% | -$13.7M |
|
538
Cisco
CSCO
$442B
| $24.2M | 0.01% |
508,584
-125,654
| -20% | -$5.97M |
|
539
CALL
Elevance Health
ELV
$84.4B
| $23.9M | 0.01% |
44,200
-7,900
| -15% | -$4.18M |
|
540
CALL
AB InBev
BUD
$161B
| $23.9M | 0.01% |
410,400
+84,400
| +26% | +$5.17M |
|
541
PUT
Rio Tinto
RIO
$150B
| $23.8M | 0.01% |
361,600
-34,600
| -9% | -$2.35M |
|
542
PUT
XPO
XPO
$25.1B
| $23.8M | 0.01% |
224,500
-85,300
| -28% | -$9.56M |
|
543
PUT
Diamondback Energy
FANG
$57.1B
| $23.8M | 0.01% |
118,800
-161,000
| -58% | -$32M |
|
544
CALL
e.l.f. Beauty
ELF
$4.66B
| $23.8M | 0.01% |
112,800
-86,300
| -43% | -$15.3M |
|
545
Arm
ARM
$303B
| $23.8M | 0.01% |
+145,197
| New | +$18.1M |
|
546
PUT
Novavax
NVAX
$1.3B
| $23.7M | 0.01% |
1,870,300
+344,400
| +23% | +$3.46M |
|
547
PUT
eBay
EBAY
$49.3B
| $23.6M | 0.01% |
439,200
+19,400
| +5% | +$1.01M |
|
548
CALL
CME Group
CME
$90.1B
| $23.6M | 0.01% |
119,900
+21,000
| +21% | +$4.34M |
|
549
CALL
Estee Lauder
EL
$29.9B
| $23.5M | 0.01% |
220,700
-185,700
| -46% | -$24.4M |
|
550
CALL
Marriott International
MAR
$97.5B
| $23.5M | 0.01% |
97,100
-10,700
| -10% | -$2.57M |
|
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.