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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CMBT
2426
CMB.TECH NV
CMBT
$4.57B
| $841K | ﹤0.01% |
95,267
-36,397
| -28% | -$339K |
|
2427
PUT
Upwork
UPWK
$1.09B
| $840K | ﹤0.01% |
482
+15
| +3% | +$225 |
|
2428
CALL
Avnet
AVT
$7.33B
| $839K | ﹤0.01% |
325
+304
| +1,448% | +$8.24K |
|
2429
CALL
Inspire Medical Systems
INSP
$1.42B
| $838K | ﹤0.01% |
65
+19
| +41% | +$2.09K |
|
2430
ADT
ADT
$5.16B
| $837K | ﹤0.01% |
102,556
+73,191
| +249% | +$712K |
|
2431
CALL
Deckers Outdoor
DECK
$13.3B
| $836K | ﹤0.01% |
228
-162
| -42% | -$5.6K |
|
|
GTLS
2432
CALL
DELISTED
Chart Industries
GTLS
| $836K | ﹤0.01% |
119
+84
| +240% | +$5.46K |
|
2433
CALL
Standard BioTools
LAB
$326M
| $836K | ﹤0.01% |
1,126
+744
| +195% | +$5.14K |
|
|
FSR
2434
DELISTED
Fisker Inc.
FSR
| $835K | ﹤0.01% |
+57,966
| New | +$791K |
|
2435
PUT
Abercrombie & Fitch
ANF
$4.17B
| $834K | ﹤0.01% |
599
-29
| -5% | -$339 |
|
2436
PUT
Levi Strauss
LEVI
$9.44B
| $834K | ﹤0.01% |
623
+7
| +1% | +$89 |
|
2437
PUT
Middleby
MIDD
$6.05B
| $834K | ﹤0.01% |
93
+14
| +18% | +$1.27K |
|
2438
PUT
Starwood Property Trust
STWD
$6.12B
| $834K | ﹤0.01% |
553
-922
| -63% | -$14.1K |
|
2439
MakeMyTrip
MMYT
$4.67B
| $832K | ﹤0.01% |
54,176
+45,745
| +543% | +$727K |
|
2440
Northern Trust
NTRS
$22.2B
| $832K | ﹤0.01% |
10,677
+6,230
| +140% | +$500K |
|
2441
iShares 20+ Year Treasury Bond ETF
TLT
$42.1B
| $832K | ﹤0.01% |
5,100
-109,241
| -96% | -$18.1M |
|
2442
CALL
CNA Financial
CNA
$14.5B
| $830K | ﹤0.01% |
277
+188
| +211% | +$6.06K |
|
2443
PUT
Illinois Tool Works
ITW
$81.4B
| $830K | ﹤0.01% |
43
-46
| -52% | -$8.74K |
|
2444
CALL
Tetra Tech
TTEK
$8.23B
| $830K | ﹤0.01% |
435
+25
| +6% | +$444 |
|
|
PRNB
2445
PUT
DELISTED
Principia Biopharma Inc. Common Stock
PRNB
| $830K | ﹤0.01% |
+83
| New | +$7.38K |
|
2446
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $829K | ﹤0.01% |
2,448
-1,460
| -37% | -$498K |
|
|
PRFT
2447
PUT
DELISTED
Perficient Inc
PRFT
| $829K | ﹤0.01% |
194
+30
| +18% | +$1.21K |
|
|
CVAC
2448
CALL
DELISTED
CureVac
CVAC
| $828K | ﹤0.01% |
+178
| New | +$9.93K |
|
2449
CALL
Huntington Bancshares
HBAN
$35.1B
| $828K | ﹤0.01% |
903
+21
| +2% | +$196 |
|
2450
Aramark
ARMK
$15B
| $827K | ﹤0.01% |
43,317
+30,607
| +241% | +$546K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.