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 | |
|---|---|---|---|---|---|---|
276
CALL
Royal Caribbean
RCL
$76.8B
| $56.7M | 0.04% |
355,700
-130,600
| -27% | -$18.8M |
|
277
PUT
American Express
AXP
$238B
| $56.6M | 0.04% |
244,500
-199,500
| -45% | -$46.2M |
|
278
CALL
Accenture
ACN
$85.6B
| $56.5M | 0.03% |
186,200
+3,400
| +2% | +$1.04M |
|
279
PUT
ARK Space & Defense Innovation ETF
ARKX
$824M
| $56.4M | 0.03% |
1,494,800
-497,700
| -25% | -$7.43M |
|
280
PUT
Devon Energy
DVN
$51.8B
| $55.5M | 0.03% |
1,170,000
+117,500
| +11% | +$5.84M |
|
281
PUT
VanEck Durable High Dividend ETF
DURA
$38.4M
| $55.4M | 0.03% |
227,000
-59,800
| -21% | -$1.9M |
|
282
CALL
Ulta Beauty
ULTA
$20.7B
| $54.9M | 0.03% |
142,200
+62,700
| +79% | +$25.5M |
|
283
PUT
Western Digital
WDC
$193B
| $54.7M | 0.03% |
955,603
+158,892
| +20% | +$8.81M |
|
284
PUT
United Parcel Service
UPS
$98.8B
| $54.7M | 0.03% |
399,700
-354,200
| -47% | -$50.7M |
|
285
CALL
Progressive
PGR
$119B
| $54.5M | 0.03% |
262,400
-3,300
| -1% | -$691K |
|
286
CALL
Lowe's Companies
LOW
$114B
| $54.5M | 0.03% |
247,100
-5,800
| -2% | -$1.32M |
|
287
PUT
AbbVie
ABBV
$450B
| $54.4M | 0.03% |
317,100
-39,200
| -11% | -$6.49M |
|
|
B
288
PUT
Barrick Mining
B
$62.4B
| $54.2M | 0.03% |
3,246,900
+1,422,900
| +78% | +$24.2M |
|
289
CALL
Blackstone
BX
$151B
| $54M | 0.03% |
436,100
-14,700
| -3% | -$1.81M |
|
290
PUT
EOG Resources
EOG
$77.3B
| $53.5M | 0.03% |
424,800
-72,400
| -15% | -$9.29M |
|
291
PUT
Analog Devices
ADI
$188B
| $52.9M | 0.03% |
231,900
-15,600
| -6% | -$3.33M |
|
292
CALL
Eaton
ETN
$158B
| $52.1M | 0.03% |
166,300
-72,100
| -30% | -$23.3M |
|
293
CALL
NXP Semiconductors
NXPI
$70.3B
| $51.2M | 0.03% |
190,300
-9,800
| -5% | -$2.53M |
|
294
PUT
Dick's Sporting Goods
DKS
$18.7B
| $51.1M | 0.03% |
237,700
-297,200
| -56% | -$61.9M |
|
295
PUT
GameStop
GME
$9.74B
| $51.1M | 0.03% |
2,068,300
+1,187,800
| +135% | +$23.5M |
|
296
CALL
Scorpio Tankers
STNG
$3.92B
| $50.6M | 0.03% |
622,300
+87,300
| +16% | +$6.68M |
|
297
PUT
Constellation Energy
CEG
$97.7B
| $50.6M | 0.03% |
305,600
+111,400
| +57% | +$22.7M |
|
298
PUT
Vertiv
VRT
$116B
| $50.4M | 0.03% |
582,700
-242,200
| -29% | -$22.1M |
|
299
CALL
Linde
LIN
$236B
| $50.1M | 0.03% |
114,200
-60,800
| -35% | -$26.8M |
|
|
300
Pinduoduo
PDD
$119B
| $49.7M | 0.03% |
+374,085
| New | +$50.7M |
|
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.