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 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
PRTY
376
DELISTED
Party City Holdco Inc.
PRTY
| $606K | 0.05% |
+40,308
| New | +$444K |
|
|
BLT
377
DELISTED
BLOUNT INTERNATIONAL (NEW)
BLT
| $606K | 0.05% |
+60,724
| New | +$583K |
|
378
CALL
Domino's
DPZ
$10.6B
| $604K | 0.05% |
496
+482
| +3,443% | +$57.5K |
|
379
CALL
NVIDIA
NVDA
$5.14T
| $593K | 0.05% |
78,280
+49,600
| +173% | +$37.8K |
|
|
SOHU
380
Sohu.com
SOHU
$336M
| $592K | 0.05% |
11,950
+4,894
| +69% | +$237K |
|
381
Invesco DB Agriculture Fund
DBA
$1.26B
| $591K | 0.05% |
28,715
+25,444
| +778% | +$515K |
|
382
CALL
Qualcomm
QCOM
$185B
| $588K | 0.05% |
4,054
+1,024
| +34% | +$49.9K |
|
|
SWIR
383
DELISTED
Sierra Wireless
SWIR
| $588K | 0.05% |
40,448
+15,973
| +65% | +$215K |
|
|
FL
384
CALL
DELISTED
Foot Locker
FL
| $587K | 0.05% |
809
+207
| +34% | +$13.4K |
|
385
CALL
Johnson & Johnson
JNJ
$615B
| $586K | 0.05% |
1,175
-574
| -33% | -$59.4K |
|
386
Sarepta Therapeutics
SRPT
$1.67B
| $586K | 0.05% |
30,049
+4,273
| +17% | +$74.7K |
|
|
MOMO
387
Hello Group
MOMO
$876M
| $584K | 0.05% |
52,024
+23,143
| +80% | +$277K |
|
|
MNDT
388
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $580K | 0.05% |
+32,264
| New | +$526K |
|
|
IOC
389
DELISTED
Interoil Corporation
IOC
| $580K | 0.05% |
18,244
+14,218
| +353% | +$400K |
|
|
HOT
390
CALL
DELISTED
STARWOOD HOTELS & RESORTS WORLDWIDE, INC.
HOT
| $578K | 0.05% |
1,225
+996
| +435% | +$68K |
|
|
ENDP
391
PUT
DELISTED
Endo International plc
ENDP
| $577K | 0.05% |
732
+38
| +5% | +$1.79K |
|
|
JUNO
392
DELISTED
Juno Therapeutics, Inc.
JUNO
| $576K | 0.05% |
+15,125
| New | +$527K |
|
|
YOKU
393
DELISTED
YOUKU TUDOU INC.(CAYMAN ISLS)
YOKU
| $573K | 0.05% |
20,853
+19,075
| +1,073% | +$521K |
|
394
CALL
Halliburton
HAL
$27.6B
| $572K | 0.05% |
2,939
+1,452
| +98% | +$47.4K |
|
395
PUT
Mastercard
MA
$470B
| $571K | 0.05% |
1,721
+621
| +56% | +$54.9K |
|
396
CALL
Biogen
BIIB
$29.2B
| $569K | 0.05% |
984
-1,473
| -60% | -$389K |
|
|
DVAX
397
DELISTED
Dynavax Technologies
DVAX
| $566K | 0.05% |
29,447
+11,985
| +69% | +$242K |
|
|
SCHW
398
Charles Schwab
SCHW
$175B
| $565K | 0.05% |
20,189
-1,475
| -7% | -$38.9K |
|
399
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $558K | 0.04% |
2,574
+808
| +46% | +$14.3K |
|
400
CALL
Occidental Petroleum
OXY
$57.2B
| $558K | 0.04% |
1,788
+614
| +52% | +$41.2K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.