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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1476
iShares MSCI Japan ETF
EWJ
$21.7B
| $2.07M | ﹤0.01% |
+37,737
| New | +$2M |
|
1477
CALL
Inseego
INSG
$108M
| $2.07M | ﹤0.01% |
179
+126
| +238% | +$13.3K |
|
1478
CALL
Ligand Pharmaceuticals
LGND
$6.02B
| $2.07M | ﹤0.01% |
297
+84
| +39% | +$5.33K |
|
1479
PUT
Cheesecake Factory
CAKE
$4.21B
| $2.07M | ﹤0.01% |
902
-919
| -50% | -$19.3K |
|
|
BRSL
1480
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $2.06M | ﹤0.01% |
2,319
+1,159
| +100% | +$9.04K |
|
1481
PUT
Under Armour Class C
UA
$2.92B
| $2.06M | ﹤0.01% |
2,181
+948
| +77% | +$8.05K |
|
1482
PUT
Xcel Energy
XEL
$51B
| $2.06M | ﹤0.01% |
329
+171
| +108% | +$10.8K |
|
|
GAP
1483
The Gap Inc
GAP
$6.84B
| $2.05M | ﹤0.01% |
+162,759
| New | +$1.47M |
|
1484
CALL
8x8 Inc
EGHT
$247M
| $2.05M | ﹤0.01% |
1,281
+655
| +105% | +$10.4K |
|
1485
CALL
Equifax
EFX
$20.3B
| $2.04M | ﹤0.01% |
119
-105
| -47% | -$15.6K |
|
|
1486
CALL
Xcel Energy
XEL
$51B
| $2.04M | ﹤0.01% |
327
+273
| +506% | +$17.2K |
|
1487
PUT
Blackstone Mortgage Trust
BXMT
$2.82B
| $2.04M | ﹤0.01% |
848
+498
| +142% | +$11.4K |
|
1488
CALL
Quaker Houghton
KWR
$2.63B
| $2.04M | ﹤0.01% |
110
| – | – |
|
1489
PUT
NetApp
NTAP
$32.9B
| $2.04M | ﹤0.01% |
459
-260
| -36% | -$11.2K |
|
1490
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$293M
| $2.04M | ﹤0.01% |
128,069
-73,599
| -36% | -$1.18M |
|
1491
CALL
ResMed
RMD
$28.3B
| $2.04M | ﹤0.01% |
106
-338
| -76% | -$55.3K |
|
1492
PUT
New York Times
NYT
$11.6B
| $2.03M | ﹤0.01% |
484
+220
| +83% | +$8K |
|
1493
CALL
Hyatt Hotels
H
$17.6B
| $2.03M | ﹤0.01% |
404
-135
| -25% | -$7.19K |
|
1494
Dell
DELL
$283B
| $2.03M | ﹤0.01% |
72,887
+20,808
| +40% | +$468K |
|
|
LK
1495
PUT
DELISTED
Luckin Coffee Inc. American Depositary Shares
LK
| $2.02M | ﹤0.01% |
8,688
-8,673
| -50% | -$35.7K |
|
1496
PUT
State Street
STT
$50.9B
| $2.02M | ﹤0.01% |
318
-210
| -40% | -$12.7K |
|
1497
PUT
Digital Realty Trust
DLR
$73.7B
| $2.02M | ﹤0.01% |
142
-521
| -79% | -$73.8K |
|
1498
ProShares UltraPro Short S&P 500
SPXU
$436M
| $2.01M | ﹤0.01% |
1,707
+104
| +6% | +$158K |
|
1499
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $2.01M | ﹤0.01% |
76,277
-210,900
| -73% | -$5.64M |
|
1500
PUT
PagerDuty
PD
$700M
| $2.01M | ﹤0.01% |
701
+454
| +184% | +$10.9K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.