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 |
Microsoft
MSFT
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1451
Option Care Health
OPCH
$3.4B
| $4.07M | ﹤0.01% |
+125,364
| New | +$3.78M |
|
1452
Expedia Group
EXPE
$31.2B
| $4.07M | ﹤0.01% |
+37,180
| New | +$3.64M |
|
1453
PUT
Vornado Realty Trust
VNO
$7.47B
| $4.07M | ﹤0.01% |
224,100
-59,600
| -21% | -$878K |
|
1454
CALL
Bloomin' Brands
BLMN
$680M
| $4.06M | ﹤0.01% |
151,100
+89,500
| +145% | +$2.24M |
|
1455
CALL
Coupang
CPNG
$27.8B
| $4.05M | ﹤0.01% |
233,100
-238,500
| -51% | -$3.89M |
|
1456
CALL
SEI Investments
SEIC
$11.9B
| $4.04M | ﹤0.01% |
67,700
+43,000
| +174% | +$2.5M |
|
1457
PUT
Kinross Gold
KGC
$28.5B
| $4.03M | ﹤0.01% |
845,000
+6,800
| +0.8% | +$34K |
|
1458
ZIM Integrated Shipping Services
ZIM
$3B
| $4.03M | ﹤0.01% |
325,336
+223,481
| +219% | +$3.59M |
|
1459
PUT
Vodafone
VOD
$34.9B
| $4.02M | ﹤0.01% |
425,400
-1,900
| -0.4% | -$20K |
|
1460
PUT
AGNC Investment
AGNC
$12.3B
| $4.01M | ﹤0.01% |
396,300
-1,052,800
| -73% | -$10.2M |
|
1461
PUT
Lantheus
LNTH
$6.82B
| $4M | ﹤0.01% |
47,700
-7,200
| -13% | -$646K |
|
1462
GitLab
GTLB
$5.28B
| $3.99M | ﹤0.01% |
78,078
+46,163
| +145% | +$1.72M |
|
1463
iShares 3-7 Year Treasury Bond ETF
IEI
$18.1B
| $3.99M | ﹤0.01% |
+34,602
| New | +$4.05M |
|
1464
CALL
Nice
NICE
$5.29B
| $3.98M | ﹤0.01% |
19,300
-26,600
| -58% | -$5.49M |
|
1465
Direxion Daily Financial Bull 3x ETF
FAS
$2.4B
| $3.98M | ﹤0.01% |
62,644
-10,400
| -14% | -$614K |
|
1466
CALL
Liberty Media Series A
FWONA
$22.3B
| $3.97M | ﹤0.01% |
124,083
-173,695
| -58% | -$11M |
|
1467
GameStop
GME
$9.5B
| $3.96M | ﹤0.01% |
163,394
+148,339
| +985% | +$3.33M |
|
1468
PUT
Annaly Capital Management
NLY
$16.9B
| $3.96M | ﹤0.01% |
198,000
-160,600
| -45% | -$3.12M |
|
1469
PUT
PVH
PVH
$3.71B
| $3.96M | ﹤0.01% |
46,600
+10,400
| +29% | +$877K |
|
1470
CALL
Chemours
CC
$2.59B
| $3.95M | ﹤0.01% |
107,000
+31,500
| +42% | +$961K |
|
1471
PUT
Public Storage
PSA
$60.2B
| $3.94M | ﹤0.01% |
13,500
+2,000
| +17% | +$583K |
|
1472
BHP
BHP
$213B
| $3.94M | ﹤0.01% |
+65,968
| New | +$3.93M |
|
1473
PUT
Southern Copper
SCCO
$141B
| $3.92M | ﹤0.01% |
59,006
+25,782
| +78% | +$1.76M |
|
1474
CALL
VICI Properties
VICI
$29.4B
| $3.92M | ﹤0.01% |
124,600
-191,100
| -61% | -$6.13M |
|
|
GAP
1475
PUT
The Gap Inc
GAP
$6.84B
| $3.92M | ﹤0.01% |
438,600
-22,400
| -5% | -$200K |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.