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 | |
|---|---|---|---|---|---|---|
|
UWC
251
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $65.2M | 0.04% |
880,800
-1,050,000
| -54% | -$77.8M |
|
|
252
CALL
GE Aerospace
GE
$357B
| $65M | 0.04% |
600,300
-262,140
| -30% | -$41.9M |
|
|
SCHW
253
PUT
Charles Schwab
SCHW
$174B
| $64.3M | 0.04% |
873,000
-343,300
| -28% | -$25.4M |
|
254
CALL
Amgen
AMGN
$199B
| $63.5M | 0.04% |
203,300
-104,300
| -34% | -$30.6M |
|
255
PUT
Royal Caribbean
RCL
$76.8B
| $62M | 0.04% |
388,900
-295,400
| -43% | -$42.5M |
|
256
PUT
e.l.f. Beauty
ELF
$4.72B
| $61.5M | 0.04% |
291,900
+40,500
| +16% | +$7.2M |
|
|
257
Pfizer
PFE
$142B
| $61.4M | 0.04% |
2,195,260
-2,410,725
| -52% | -$66.4M |
|
258
PUT
Carnival Corporation Ltd
CCL
$36.1B
| $61.2M | 0.04% |
3,268,500
-2,173,900
| -40% | -$33.6M |
|
259
CALL
Zscaler
ZS
$23.2B
| $61.2M | 0.04% |
318,300
-63,100
| -17% | -$11.2M |
|
260
TSMC
TSM
$2.19T
| $60.5M | 0.04% |
348,151
-76,136
| -18% | -$11.5M |
|
261
CALL
Lam Research
LRCX
$401B
| $60.5M | 0.04% |
568,000
-221,000
| -28% | -$21.2M |
|
262
CALL
Sea Limited
SE
$64.8B
| $60.4M | 0.04% |
845,800
-196,500
| -19% | -$13M |
|
263
PUT
Verizon
VZ
$185B
| $60.3M | 0.04% |
1,462,700
-640,800
| -30% | -$25.8M |
|
264
CALL
Comcast
CMCSA
$84.7B
| $60.3M | 0.04% |
1,539,300
+927,400
| +152% | +$36.3M |
|
265
PUT
Ulta Beauty
ULTA
$20.7B
| $60M | 0.04% |
155,400
-25,400
| -14% | -$10.3M |
|
266
CALL
Proshares UltraShort Technology
REW
$3.28M
| $60M | 0.04% |
1,132,525
+438,325
| +63% | +$23.7M |
|
267
CALL
Delta Air Lines
DAL
$55.2B
| $59.1M | 0.04% |
1,245,900
-337,900
| -21% | -$16.8M |
|
268
PUT
DraftKings
DKNG
$11.4B
| $58.2M | 0.04% |
1,524,900
-696,800
| -31% | -$28.9M |
|
269
CALL
NetApp
NTAP
$32.8B
| $57.9M | 0.04% |
449,900
+57,000
| +15% | +$6.4M |
|
270
PUT
RTX Corp
RTX
$263B
| $57.9M | 0.04% |
850,100
-448,500
| -35% | -$46.4M |
|
271
CALL
Robinhood
HOOD
$95.2B
| $57.8M | 0.04% |
2,543,900
-1,742,300
| -41% | -$34.1M |
|
272
CALL
Abbott
ABT
$176B
| $57.7M | 0.04% |
555,500
+252,800
| +84% | +$26.8M |
|
273
Alibaba
BABA
$279B
| $57.5M | 0.04% |
799,246
+168,820
| +27% | +$12.9M |
|
|
274
PUT
Zscaler
ZS
$23.2B
| $57.4M | 0.04% |
298,500
-14,000
| -4% | -$2.49M |
|
275
PUT
Invesco Aerospace & Defense ETF
PPA
$8.04B
| $57.2M | 0.04% |
355,300
+185,900
| +110% | +$19.1M |
|
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.