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 |
iShares Russell 2000 ETF
IWM
|
+$146M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$108M |
| 3 |
Apple
AAPL
|
+$62.9M |
| 4 |
Tesla
TSLA
|
+$51.9M |
| 5 |
Micron Technology
MU
|
+$39.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$108M |
| 2 |
Meta Platforms (Facebook)
META
|
+$104M |
| 3 |
Advanced Micro Devices
AMD
|
+$92.1M |
| 4 |
Amazon
AMZN
|
+$90.3M |
| 5 |
TSMC
TSM
|
+$82.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 98.28% |
| 2 | Technology | 0.76% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.19% |
| 5 | Healthcare | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1601
PUT
Viatris
VTRS
$20.5B
| $3.08M | ﹤0.01% |
193,700
+120,100
| +163% | +$1.86M |
|
1602
CALL
Vanguard Short-Term Treasury ETF
VGSH
$34.5B
| $3.07M | ﹤0.01% |
45,500
+1,200
| +3% | +$70K |
|
1603
Invesco KBW Bank ETF
KBWB
$6.54B
| $3.07M | ﹤0.01% |
33,029
+27,695
| +519% | +$2.42M |
|
1604
Royal Caribbean
RCL
$64.9B
| $3.07M | ﹤0.01% |
+9,668
| New | +$2.7M |
|
1605
CALL
Ericsson
ERIC
$31.1B
| $3.07M | ﹤0.01% |
275,100
+120,300
| +78% | +$1.45M |
|
1606
CALL
XPO
XPO
$20.3B
| $3.06M | ﹤0.01% |
14,900
-1,000
| -6% | -$212K |
|
1607
CALL
American Eagle Outfitters
AEO
$2.78B
| $3.06M | ﹤0.01% |
177,800
-12,300
| -6% | -$213K |
|
|
QXO
1608
PUT
QXO Inc
QXO
$12.9B
| $3.06M | ﹤0.01% |
176,900
+84,600
| +92% | +$1.57M |
|
1609
CALL
BWX Technologies
BWXT
$12.7B
| $3.06M | ﹤0.01% |
15,700
+600
| +4% | +$125K |
|
1610
PUT
Annaly Capital Management
NLY
$15.5B
| $3.05M | ﹤0.01% |
136,300
-162,300
| -54% | -$3.58M |
|
1611
PUT
Symbotic
SYM
$5.65B
| $3.04M | ﹤0.01% |
67,600
+18,600
| +38% | +$948K |
|
1612
CALL
Moody's
MCO
$81.2B
| $3.03M | ﹤0.01% |
6,700
-2,900
| -30% | -$1.3M |
|
1613
CALL
KeyCorp
KEY
$22B
| $3.03M | ﹤0.01% |
131,500
-162,600
| -55% | -$3.54M |
|
1614
CALL
Hasbro
HAS
$12.4B
| $3.03M | ﹤0.01% |
36,700
+22,900
| +166% | +$2.06M |
|
1615
PUT
e.l.f. Beauty
ELF
$5.87B
| $3.03M | ﹤0.01% |
40,900
-8,300
| -17% | -$504K |
|
1616
CALL
TMC The Metals Company
TMC
$1.73B
| $3.03M | ﹤0.01% |
682,900
+275,500
| +68% | +$1.44M |
|
1617
CALL
Hudbay
HBM
$11.8B
| $3.02M | ﹤0.01% |
127,800
-64,800
| -34% | -$1.64M |
|
1618
CALL
Pitney Bowes
PBI
$2.25B
| $3.02M | ﹤0.01% |
172,200
+29,900
| +21% | +$457K |
|
1619
CALL
Kinross Gold
KGC
$29.7B
| $3.02M | ﹤0.01% |
127,700
-3,300
| -3% | -$97K |
|
|
DGXX
1620
CALL
Digi Power X Inc
DGXX
$465M
| $3.01M | ﹤0.01% |
552,800
+328,400
| +146% | +$1.79M |
|
1621
PUT
United States Brent Oil Fund
BNO
$740M
| $3.01M | ﹤0.01% |
74,000
+40,900
| +124% | +$2.09M |
|
1622
CALL
Axsome Therapeutics
AXSM
$10.2B
| $3.01M | ﹤0.01% |
12,300
-5,600
| -31% | -$1.21M |
|
1623
PUT
Ralph Lauren
RL
$21.3B
| $3.01M | ﹤0.01% |
7,500
+1,900
| +34% | +$707K |
|
1624
TJX Companies
TJX
$143B
| $3.01M | ﹤0.01% |
19,846
+19,547
| +6,537% | +$3.09M |
|
1625
CALL
TE Connectivity
TEL
$63.3B
| $3M | ﹤0.01% |
14,900
-5,700
| -28% | -$1.21M |
|
Similar funds
Simplex Trading's Q2 2026 Portfolio in Review
As of Q2 2026, Simplex Trading held 10,638 positions worth $171B, up 14% from $149B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q2 2026 filing shows 1,714 new, 3,712 increased, 3,486 reduced and 1,487 closed positions. Its largest new stake was Micron Technology: 52,682 shares worth $60.8M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $108M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- Simplex Trading's largest Q2 2026 buy was Micron Technology: 52,682 shares worth $60.8M.
- Simplex Trading added most to iShares Russell 2000 ETF in Q2 2026, an estimated $146M increase.
- Simplex Trading's biggest Q2 2026 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $108M.
- Simplex Trading fully exited Intel in Q2 2026, selling an estimated $76.6M.
- Simplex Trading's ten largest holdings make up 50% of its $171B portfolio in Q2 2026.
- Simplex Trading opened 1,714 new positions and closed 1,487 in Q2 2026.
- Simplex Trading's portfolio value rose 14% quarter-over-quarter to $171B.
Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.