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 | |
|---|---|---|---|---|---|---|
176
CALL
Mastercard
MA
$473B
| $86.6M | 0.05% |
196,400
-45,700
| -19% | -$20.8M |
|
177
CALL
JD.com
JD
$40.7B
| $86.4M | 0.05% |
3,345,300
-299,100
| -8% | -$8.78M |
|
178
PUT
United Airlines
UAL
$38B
| $86.3M | 0.05% |
1,774,500
+2,700
| +0.2% | +$136K |
|
179
PUT
Humana
HUM
$48.1B
| $85.9M | 0.05% |
229,800
-18,900
| -8% | -$6.38M |
|
180
CALL
lululemon athletica
LULU
$12.8B
| $85.6M | 0.05% |
286,600
-61,600
| -18% | -$20.6M |
|
181
PUT
PepsiCo
PEP
$185B
| $85.4M | 0.05% |
584,100
+169,900
| +41% | +$29.3M |
|
|
182
PUT
lululemon athletica
LULU
$12.8B
| $85.2M | 0.05% |
285,400
-6,300
| -2% | -$2.11M |
|
183
PUT
iShares MSCI Australia ETF
EWA
$1.35B
| $85.2M | 0.05% |
2,830,600
-44,300
| -2% | -$1.08M |
|
184
CALL
Vertiv
VRT
$115B
| $84.8M | 0.05% |
980,100
+155,000
| +19% | +$14.1M |
|
185
PUT
ServiceNow
NOW
$100B
| $84.7M | 0.05% |
538,500
-343,500
| -39% | -$50.4M |
|
186
CALL
Lockheed Martin
LMT
$119B
| $84.5M | 0.05% |
181,000
+18,500
| +11% | +$8.55M |
|
187
PUT
General Motors
GM
$74.2B
| $84.1M | 0.05% |
1,809,600
-341,000
| -16% | -$15.4M |
|
188
CALL
Merck
MRK
$317B
| $82.5M | 0.05% |
666,100
-64,400
| -9% | -$8.3M |
|
189
CALL
DraftKings
DKNG
$11.4B
| $82.1M | 0.05% |
2,149,900
-458,000
| -18% | -$19M |
|
190
CALL
Moderna
MRNA
$23.4B
| $81.9M | 0.05% |
689,500
-37,800
| -5% | -$4.78M |
|
191
CALL
Caterpillar
CAT
$413B
| $81.8M | 0.05% |
245,600
-142,000
| -37% | -$49.2M |
|
|
192
CALL
iShares MSCI Australia ETF
EWA
$1.35B
| $81.7M | 0.05% |
2,755,600
+407,700
| +17% | +$9.92M |
|
193
CALL
Morgan Stanley
MS
$344B
| $81.3M | 0.05% |
836,900
-199,200
| -19% | -$19M |
|
194
CALL
Procter & Gamble
PG
$348B
| $80.9M | 0.05% |
490,400
-18,700
| -4% | -$3.06M |
|
|
195
CALL
ServiceNow
NOW
$100B
| $80.6M | 0.05% |
512,000
+30,500
| +6% | +$4.48M |
|
196
PUT
T-Mobile US
TMUS
$207B
| $80.3M | 0.05% |
455,800
+46,400
| +11% | +$7.78M |
|
|
KFYP
197
CALL
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $80.1M | 0.05% |
2,965,800
-1,515,500
| -34% | -$40.9M |
|
198
PUT
Johnson & Johnson
JNJ
$613B
| $79.7M | 0.05% |
545,300
-42,900
| -7% | -$6.38M |
|
199
PUT
Abercrombie & Fitch
ANF
$4.15B
| $79.5M | 0.05% |
446,800
+143,600
| +47% | +$20.8M |
|
200
CALL
Verizon
VZ
$187B
| $79.2M | 0.05% |
1,919,600
+58,700
| +3% | +$2.37M |
|
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.