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 | |
|---|---|---|---|---|---|---|
|
FITB
1426
PUT
Fifth Third Bancorp
FITB
$52B
| $5.07M | ﹤0.01% |
139,000
-61,200
| -31% | -$2.24M |
|
1427
Las Vegas Sands
LVS
$30.5B
| $5.07M | ﹤0.01% |
114,594
-61,171
| -35% | -$2.85M |
|
1428
Caterpillar
CAT
$409B
| $5.06M | ﹤0.01% |
15,201
+8,422
| +124% | +$2.92M |
|
1429
CALL
STMicroelectronics
STM
$46B
| $5.06M | ﹤0.01% |
128,900
+25,900
| +25% | +$1.08M |
|
1430
PUT
Vail Resorts
MTN
$5.19B
| $5.06M | ﹤0.01% |
28,100
+20,000
| +247% | +$3.98M |
|
1431
PUT
Dominion Energy
D
$62.5B
| $5.05M | ﹤0.01% |
103,000
-193,600
| -65% | -$9.86M |
|
1432
CALL
Ball Corp
BALL
$17B
| $5.04M | ﹤0.01% |
84,000
-93,300
| -53% | -$6.25M |
|
1433
PUT
Astera Labs
ALAB
$50B
| $5.02M | ﹤0.01% |
82,900
+46,800
| +130% | +$3.25M |
|
1434
Truist Financial
TFC
$63.2B
| $5.01M | ﹤0.01% |
129,031
-40,803
| -24% | -$1.54M |
|
1435
CALL
Moody's
MCO
$82.4B
| $5.01M | ﹤0.01% |
11,900
+7,600
| +177% | +$3.02M |
|
1436
Dynatrace
DT
$12.1B
| $5.01M | ﹤0.01% |
111,946
+94,913
| +557% | +$4.37M |
|
1437
CALL
Golar LNG
GLNG
$4.95B
| $5.01M | ﹤0.01% |
159,700
-15,800
| -9% | -$418K |
|
1438
CALL
Toro Company
TTC
$8.93B
| $5M | ﹤0.01% |
53,500
+38,700
| +261% | +$3.41M |
|
1439
CALL
IonQ
IONQ
$12.3B
| $5M | ﹤0.01% |
711,500
-173,800
| -20% | -$1.42M |
|
1440
PUT
UDR
UDR
$12.9B
| $5M | ﹤0.01% |
121,400
-300
| -0.2% | -$11.6K |
|
1441
PUT
AvalonBay Communities
AVB
$27.1B
| $4.99M | ﹤0.01% |
24,100
-13,700
| -36% | -$2.65M |
|
1442
CALL
Uranium Energy
UEC
$4.71B
| $4.98M | ﹤0.01% |
829,400
+335,800
| +68% | +$2.28M |
|
1443
PUT
Lincoln National
LNC
$7.91B
| $4.98M | ﹤0.01% |
160,200
-43,200
| -21% | -$1.31M |
|
1444
CALL
JB Hunt Transport Services
JBHT
$27.1B
| $4.98M | ﹤0.01% |
31,100
+3,600
| +13% | +$604K |
|
1445
CALL
Northern Trust
NTRS
$22.2B
| $4.96M | ﹤0.01% |
59,100
-29,800
| -34% | -$2.5M |
|
1446
PUT
W.W. Grainger
GWW
$65.3B
| $4.96M | ﹤0.01% |
5,500
-6,400
| -54% | -$6.02M |
|
|
SGI
1447
CALL
Somnigroup International
SGI
$15.1B
| $4.95M | ﹤0.01% |
104,500
+11,900
| +13% | +$602K |
|
1448
CALL
Magna International
MGA
$17.9B
| $4.94M | ﹤0.01% |
118,000
+94,900
| +411% | +$4.44M |
|
1449
CALL
Insulet
PODD
$11.3B
| $4.94M | ﹤0.01% |
24,500
-6,400
| -21% | -$1.15M |
|
1450
PUT
Valley National Bancorp
VLY
$7.93B
| $4.94M | ﹤0.01% |
707,200
+56,300
| +9% | +$411K |
|
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.