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 | |
|---|---|---|---|---|---|---|
226
PUT
Amgen
AMGN
$199B
| $71.5M | 0.04% |
228,700
-29,600
| -11% | -$8.7M |
|
227
PUT
Delta Air Lines
DAL
$55.5B
| $71.3M | 0.04% |
1,502,700
-525,600
| -26% | -$26.2M |
|
228
CALL
American Express
AXP
$238B
| $71.1M | 0.04% |
306,900
-126,000
| -29% | -$29.2M |
|
229
CALL
Newmont
NEM
$103B
| $70.4M | 0.04% |
1,680,900
-761,200
| -31% | -$31.1M |
|
|
XYZ
230
PUT
Block Inc
XYZ
$46.3B
| $70M | 0.04% |
1,086,000
-247,000
| -19% | -$17.3M |
|
231
PUT
McDonald's
MCD
$188B
| $69.3M | 0.04% |
272,000
-38,900
| -13% | -$10.3M |
|
232
CALL
Carnival Corporation Ltd
CCL
$36B
| $69.3M | 0.04% |
3,701,700
+315,900
| +9% | +$4.88M |
|
|
KFYP
233
PUT
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $68.8M | 0.04% |
2,546,900
-225,500
| -8% | -$6.09M |
|
234
CALL
Datadog
DDOG
$88.3B
| $68.8M | 0.04% |
530,400
+61,300
| +13% | +$7.42M |
|
235
CALL
HubSpot
HUBS
$10.5B
| $68.2M | 0.04% |
115,600
+91,700
| +384% | +$56.2M |
|
236
PUT
Linde
LIN
$235B
| $67.8M | 0.04% |
154,500
+4,000
| +3% | +$1.76M |
|
237
PUT
Bristol-Myers Squibb
BMY
$125B
| $67.7M | 0.04% |
1,631,300
+507,100
| +45% | +$22.7M |
|
238
PUT
RH
RH
$3.33B
| $66.8M | 0.04% |
273,100
+32,500
| +14% | +$8.54M |
|
239
PUT
NextEra Energy
NEE
$185B
| $66.7M | 0.04% |
942,100
+363,400
| +63% | +$25.8M |
|
240
PUT
ConocoPhillips
COP
$145B
| $66.7M | 0.04% |
583,100
-88,300
| -13% | -$10.7M |
|
|
241
CALL
NextEra Energy
NEE
$185B
| $66.6M | 0.04% |
940,000
+368,200
| +64% | +$26.1M |
|
242
PUT
Robinhood
HOOD
$94.6B
| $66.5M | 0.04% |
2,929,800
+236,700
| +9% | +$4.63M |
|
243
PUT
Rivian
RIVN
$25.3B
| $66.5M | 0.04% |
4,955,400
+1,744,100
| +54% | +$18.2M |
|
|
SCHW
244
CALL
Charles Schwab
SCHW
$173B
| $66.4M | 0.04% |
901,600
-11,300
| -1% | -$835K |
|
245
CALL
Humana
HUM
$48B
| $66.4M | 0.04% |
177,800
-109,000
| -38% | -$36.8M |
|
246
PUT
Shopify
SHOP
$152B
| $66.2M | 0.04% |
1,002,200
-628,100
| -39% | -$41.7M |
|
247
CALL
Devon Energy
DVN
$51.7B
| $65.9M | 0.04% |
1,389,600
-894,600
| -39% | -$44.5M |
|
248
CALL
Union Pacific
UNP
$174B
| $65.8M | 0.04% |
290,900
-16,600
| -5% | -$3.89M |
|
|
249
PUT
Datadog
DDOG
$88.3B
| $65.7M | 0.04% |
506,300
-32,800
| -6% | -$3.97M |
|
|
250
CALL
Bristol-Myers Squibb
BMY
$125B
| $65.5M | 0.04% |
1,576,900
+132,600
| +9% | +$5.93M |
|
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.