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 | |
|---|---|---|---|---|---|---|
326
PUT
Synopsys
SNPS
$72.2B
| $44.9M | 0.03% |
75,400
-93,600
| -55% | -$52.9M |
|
327
CALL
DoorDash
DASH
$77.4B
| $44.7M | 0.03% |
410,900
+38,000
| +10% | +$4.58M |
|
328
PUT
Ford
F
$57.3B
| $44.7M | 0.03% |
3,561,600
-446,500
| -11% | -$5.52M |
|
329
PUT
Merck
MRK
$316B
| $44.4M | 0.03% |
358,600
-267,700
| -43% | -$34.5M |
|
330
CALL
T-Mobile US
TMUS
$206B
| $44.4M | 0.03% |
251,900
-135,400
| -35% | -$22.7M |
|
331
CALL
GameStop
GME
$9.7B
| $44.4M | 0.03% |
1,796,300
+715,200
| +66% | +$14.2M |
|
332
PUT
JD.com
JD
$40.8B
| $44.3M | 0.03% |
1,713,400
-1,244,500
| -42% | -$36.5M |
|
333
CALL
Cloudflare
NET
$96.1B
| $44.2M | 0.03% |
534,100
-134,900
| -20% | -$10.9M |
|
334
PUT
Charter Communications
CHTR
$15.8B
| $44.1M | 0.03% |
147,600
-135,800
| -48% | -$37.1M |
|
335
PUT
Atlassian
TEAM
$21.8B
| $44.1M | 0.03% |
249,400
+40,700
| +20% | +$7.27M |
|
336
CALL
On Holding
ONON
$12.2B
| $44.1M | 0.03% |
1,136,800
+71,400
| +7% | +$2.61M |
|
337
CALL
Live Nation Entertainment
LYV
$41.5B
| $44.1M | 0.03% |
470,000
+160,100
| +52% | +$15.1M |
|
|
B
338
Barrick Mining
B
$62.4B
| $43.8M | 0.03% |
2,628,449
+954,993
| +57% | +$16.2M |
|
339
PUT
Coca-Cola
KO
$354B
| $43.6M | 0.03% |
684,400
-124,800
| -15% | -$7.73M |
|
340
CALL
McKesson
MCK
$95.7B
| $43.4M | 0.03% |
74,300
+49,500
| +200% | +$27.6M |
|
341
CALL
Shell
SHEL
$244B
| $43.4M | 0.03% |
601,000
+207,000
| +53% | +$14.8M |
|
342
PUT
Deere & Co
DE
$164B
| $43.4M | 0.03% |
116,100
-32,200
| -22% | -$12.6M |
|
343
PUT
SLB Ltd
SLB
$71B
| $43.3M | 0.03% |
918,000
-309,700
| -25% | -$14.9M |
|
|
344
CALL
Charter Communications
CHTR
$15.8B
| $43M | 0.03% |
143,800
+11,600
| +9% | +$3.17M |
|
345
CALL
Philip Morris
PM
$301B
| $42.9M | 0.03% |
423,800
+21,800
| +5% | +$2.13M |
|
346
CALL
Valero Energy
VLO
$93B
| $42.7M | 0.03% |
272,400
+22,900
| +9% | +$3.7M |
|
347
PUT
Lennar Class A
LEN
$19.7B
| $42.7M | 0.03% |
294,095
+22,416
| +8% | +$3.41M |
|
348
PUT
Intuit
INTU
$78.1B
| $42M | 0.03% |
63,900
-43,000
| -40% | -$26.7M |
|
349
PUT
Southwest Airlines
LUV
$23.2B
| $41.6M | 0.03% |
1,454,000
+934,600
| +180% | +$26.1M |
|
350
CALL
Northrop Grumman
NOC
$74.4B
| $41.5M | 0.03% |
95,300
-14,500
| -13% | -$6.62M |
|
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.