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 | |
|---|---|---|---|---|---|---|
426
PUT
Transocean
RIG
$5.87B
| $518K | 0.04% |
4,310
+3,203
| +289% | +$31.8K |
|
|
PXD
427
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $518K | 0.04% |
497
-231
| -32% | -$28.6K |
|
|
UWC
428
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $518K | 0.04% |
1,472
+521
| +55% | +$183K |
|
429
CALL
Fastenal
FAST
$52B
| $517K | 0.04% |
5,116
+4,700
| +1,130% | +$51.1K |
|
430
PUT
Las Vegas Sands
LVS
$30B
| $515K | 0.04% |
1,158
-598
| -34% | -$27.4K |
|
|
TYNS
431
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $515K | 0.04% |
3,243
-831
| -20% | -$23.7K |
|
432
Kroger
KR
$35.3B
| $514K | 0.04% |
+13,453
| New | +$519K |
|
433
Xerox
XRX
$348M
| $511K | 0.04% |
+17,409
| New | +$449K |
|
|
DST
434
DELISTED
DST Systems Inc.
DST
| $511K | 0.04% |
9,066
+4,620
| +104% | +$246K |
|
435
CALL
Newmont
NEM
$102B
| $507K | 0.04% |
3,107
+2,961
| +2,028% | +$68.5K |
|
|
OUTR
436
PUT
DELISTED
OUTERWALL INC
OUTR
| $505K | 0.04% |
464
+396
| +582% | +$13K |
|
|
AET
437
CALL
DELISTED
Aetna Inc
AET
| $504K | 0.04% |
1,227
+51
| +4% | +$5.46K |
|
438
Toyota
TM
$213B
| $503K | 0.04% |
4,735
+2,705
| +133% | +$299K |
|
|
SCTY
439
CALL
DELISTED
SolarCity Corporation
SCTY
| $503K | 0.04% |
4,265
+1,165
| +38% | +$33.2K |
|
440
CALL
CNX Resources
CNX
$4.9B
| $502K | 0.04% |
2,704
+551
| +26% | +$4.01K |
|
|
TTM
441
DELISTED
Tata Motors Limited
TTM
| $502K | 0.04% |
17,283
+15,412
| +824% | +$389K |
|
442
CALL
Kinder Morgan
KMI
$72.3B
| $501K | 0.04% |
4,064
+838
| +26% | +$13.7K |
|
443
CALL
ProShares Ultra S&P500
SSO
$8.02B
| $500K | 0.04% |
16,576
+1,624
| +11% | +$11.7K |
|
444
Fossil Group
FOSL
$246M
| $498K | 0.04% |
11,223
+10,121
| +918% | +$399K |
|
|
WLL
445
PUT
DELISTED
Whiting Petroleum Corporation
WLL
| $498K | 0.04% |
3
+2
| +200% | +$3.93K |
|
446
Philips
PHG
$25.5B
| $497K | 0.04% |
24,364
+7,905
| +48% | +$146K |
|
447
Royal Gold
RGLD
$17.1B
| $496K | 0.04% |
9,678
+6,232
| +181% | +$254K |
|
448
PUT
Union Pacific
UNP
$174B
| $496K | 0.04% |
1,188
+381
| +47% | +$29.5K |
|
449
PUT
Cleveland-Cliffs
CLF
$5.39B
| $494K | 0.04% |
529
+13
| +3% | +$27 |
|
|
CKH
450
DELISTED
Seacor Holdings Inc.
CKH
| $494K | 0.04% |
+9,389
| New | +$434K |
|
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.